No, I don't know him personally, but I can tell you Tucson and Flagstaff are both very left-leaning liberal bastions in Arizona and you need to careful what comes out of both areas... when you take a look at Mark Potok I would take anything he says about anyone with a very large grain of salt, he sounds like he'd get along fine with Meghan McCain, but not very well with a right-leaning, conservative.
http://www.huffingtonpost.com/mark-potok