Unalee, what you have there is your garden-variety crackpot. I'm surprised you haven't run into one of these before. I think just about every librarian here (DavidH, Yarnspinner, others) has stories about someone with an obsession over some thing or another and demands support for their position. Real journalists have the same problems as well.
Oh, I've met a few crackpots in the year and a half I've worked here. But this guy took it to a whole new level I've never seen before. I found informal journalism forums online that raked this guy up one side and down the other, and detail just which papers and media outlets have dealt with him or been the focus of his obsessive fact-checking.
He seems to have a genuine concern for accuracy, but his delivery is so horrifically self-centered and abrasive, that the message is lost.
When I was in college, there was a "street preacher" who would set up on a corner of campus and rant about every possible special interest group, ethnic group, and alternative lifestyle, attracting large crowds of angry students. The college newspaper looked into his history after Preacher Bob ranted about a particular ethnic group and a member of said ethnic group shoved him off of his soap box (seriously, he had his own soap box) and Preacher Bob was injured.
It turned out that Preacher Bob had been in such altercations on at least five other college campuses. And his MO was to sue the school for not protecting him from the angry students who assaulted him or for violating his rights to free speech when the campus security removed him from campus.
It sounds like "Mike" is trying to make himself such a nuisance that the college offers him whatever it takes to make him go away. You are a more patient person than I for putting up with him for so long!