I have some serious doubts about this story. Strathclyde Law School does not have Mark Leiser listed as a law lecturer. Searching for "Mark Leiser Strathclyde" produced a page that seems to indicate that he's a PhD student. If he's not being truthful about this, then I for one would think that he might not be telling the entire truth. Easyjet have replied to this indicating that he might have been disruptive. Reading…
"I am a PhD Student in Cyber-Law at the University of Strathclyde. I am researching the effects, limits and the legitimacy of regulation and law in cyberspace. I am currently researching what “activates” the active dot in the active/pathetic dot matrix within the context of cyber-legitimacy. My interests are governance -Internet and Corporate, copyright, trademarks, social media and Internet Regulation. I lecture part of Internet Law and am a tutor for Internet Law, Commercial Law, Business Law, Legal methods, and Voluntary Obligations."
Emphasis mine. He is a graduate student who also teaches.