Eulerfan -
So at a guess, this guy in your SD class who's after you (and should be with his wife) is the evil manipulator/pr!ck that you told us about way back when? And who recently returned, causing you to have a crisis of confidence? Even if he isn't, it sounds like a really toxic situation.
This may be really harsh, but I think perhaps you should tell his wife and tell her to tell him to stop, and then tell him you told his wife and tell him to stop.
And if you really like this Jeff Bolt's pitch, go ahead and switch schools anyway, considering the issues you're having with your techer leaving.