Please don't misquote me, I haven't said he is wrong I said it is possible that he could be discredited.
As for the scruples of this campaign, they have been absent on both sides.
In terms of what I found disingenuous, and perhaps with your legally trained mind you can help me here...was the part about Sovereignty (you will need to keep it fairly simple though I'm afraid).
If we are truly Sovereign...then can Brussels make our Laws?...and the European court implement despite the wishes of Parliament and those who elected it?
The Professor is very clear in stating that the EU is not sovereign, and yet goes onto say that part of belonging means we give away power and decision making to it.
In simple terms and correct me if I'm wrong (despite legal theory), the EU Commission propose Law (they are appointed not elected), and those laws then goes to the European parliament who can amend, pass or decline accordingly?
He could be discredited or his views could be discredited?
If the former, my apologies and I clearly made a mistake in assuming you'd play the ball and not the man. If the latter, I'm having a little trouble in squaring that away with "it might be wrong".
Anyway to answer your question, yes Parliament is sovereign as Brussels' authority derives from Parliament.
It's the same concept as secondary legislation, which forms the overwhelming majority of UK legislation. Much of the detail of English law is not passed by the Houses of Parliament but is instead delegated and a faceless bureaucrat (or quango) ends up filling in the all important bits and avoiding proper Parliamentary scrutiny.
For example, 2009 saw just 27 Acts of UK Parliament but over 3000 delegated pieces of secondary legislation put into law by individuals or bodies other than Parliament.
Here's just a small selection of them from wiki
The Local Government (Structural Changes) (Further Financial Provisions and Amendment) Regulations (SI 2009/5)
The Conservation (Natural Habitats, &c.) (Amendment) (England and Wales) Regulations (SI 2009/6)
The Offshore Marine Conservation (Natural Habitats, &c.) (Amendment) Regulations (SI 2009/7)
The 5875-5905 MHz Frequency Band (Management) Regulations (SI 2009/11)
The Safeguarding Vulnerable Groups Act 2006 (Transitory Provisions) Order (SI 2009/12)
The Wireless Telegraphy (Register) (Amendment) Regulations (SI 2009/14)
The Wireless Telegraphy (Limitation of Number of Grants of Crown Recognised Spectrum Access) Order (SI 2009/15)
The Wireless Telegraphy (Crown Recognised Spectrum Access) Regulations (SI 2009/16)
The Wireless Telegraphy (Recognised Spectrum Access and Licence) (Spectrum Trading) Regulations (SI 2009/17)
The Civil Enforcement of Parking Contraventions (County of Derbyshire) Designation Order (SI 2009/19)
The Copyright (Certification of Licensing Scheme for Educational Recording of Broadcasts) (Educational Recording Agency Limited) (Amendment) Order (SI 2009/20)
The Income Tax Act 2007 (Amendment) Order (SI 2009/23)
The Civil Enforcement of Parking Contraventions (County of West Sussex) (Adur District) Designation Order (SI 2009/24)
The Education (Admissions Appeals Arrangements) (England) (Amendment) Regulations (SI 2009/25)
The General Chiropractic Council (Constitution of the Statutory Committees) Rules Order of Council (SI 2009/26)
The General Chiropractic Council (Registration of Chiropractors with United Kingdom Qualifications that are not Recognised Qualifications) Rules Order of Council (SI 2009/27)
The Feeding Stuffs (England) (Amendment) Regulations (SI 2009/28)
The National Health Service (Charges for Drugs and Appliances) Amendment Regulations (SI 2009/29)
The Income-related Benefits (Subsidy to Authorities) Amendment Order (SI 2009/30)
The Offender Management Act 2007 (Commencement No. 3) Order (SI 2009/32)
The Home Information Pack (Amendment) Regulations (SI 2009/34)
The Stamp Duty and Stamp Duty Reserve Tax (Investment Exchanges and Clearing Houses) Regulations (SI 2009/35)
The Building Societies (Funding) and Mutual Societies (Transfers) Act 2007 (Commencement No. 1) Order (SI 2009/36)
The Safeguarding Vulnerable Groups Act 2006 (Prescribed Criteria and Miscellaneous Provisions) Regulations (SI 2009/37)
The Health Protection (Vaccination) Regulations (SI 2009/38)
The Safeguarding Vulnerable Groups Act 2006 (Commencement No. 3) Order (SI 2009/39)
The Local Government (Assistants for Political Groups) (Remuneration) (Wales) Order (SI 2009/40)
The Operation of Air Services in the Community Regulations (SI 2009/41)
The Barking, Havering and Redbridge Hospitals National Health Service Trust (Establishment) Amendment Order (SI 2009/43)
The Energy Act 2008 (Commencement No. 1 and Savings) Order (SI 2009/45)
The Water (Prevention of Pollution) (Code of Good Agricultural Practice) (England) Order (SI 2009/46)
The Environmental Noise (Wales) (Amendment) Regulations (SI 2009/47)
The Education (Maintained Special Schools) (Wales) (Amendment) Regulations (SI 2009/48)
The Education and Inspections Act 2006 (Commencement No. 2) (Wales) Order (SI 2009/49)
The A46 Trunk Road (Newark to Widmerpool Improvement and Slip Roads) Order (SI 2009/50)
The A52 Trunk Road (A46 Newark to Widmerpool Improvement and Slip Roads) Order (SI 2009/51)
The A46 Trunk Road (Newark to Widmerpool Improvement and Slip Roads) (Detrunking) Order (SI 2009/52)
The A52 Trunk Road (A46 Newark to Widmerpool Improvement and Slip Roads) (Detrunking) Order (SI 2009/53)
The National Health Service (Travelling Expenses and Remission of Charges) (Wales) (Amendment) Regulations (SI 2009/54)
The Local Authorities (Charges for Property Searches) (Disapplication) (Wales) Order (SI 2009/55)
The Transfer of Tribunal Functions and Revenue and Customs Appeals Order (SI 2009/56)
The Counter-Terrorism Act 2008 (Commencement No. 2) Order (SI 2009/58)
The Road Tunnel Safety (Amendment) Regulations (SI 2009/64)
The Wireless Telegraphy (Vehicle Based Intelligent Transport Systems) (Exemption) Regulations (SI 2009/65)
The Wireless Telegraphy (Licence Charges) (Amendment) Regulations (SI 2009/66)
OGCbuying.solutions Trading Fund (Extension and Amendment) Order (SI 2009/81)
The Pensions Act 2008 (Commencement No. 2) Order (SI 2009/82)
The Penalties for Disorderly Behaviour (Amount of Penalty) (Amendment) Order (SI 2009/83)
Whilst a loud minority get very excited when this happens through the EU nobody seems to care about a Senior Civil Servant producing and signing off on delegated legislation though. Still, it probably beats getting some 90 year old who's never held down a proper job in their life to approve it.
(Of course if you are seeking to protect Parliamentary Sovereignty you will be abstaining from the referendum as the decision should properly lie with Parliament and not with the British public and you'd be encouraging all MPs - not to mention the unelected House of Lords - to ignore whatever outcome of the referendum there is and just vote as they see fit as the duly elected/inherited/appointed as a political favour [delete as applicable] figure sees fit.)