I think the theater location is further evidence of MI. Due to it not being very logical/rational if he thought the uni was at fault. You know, I was wondering last night whether anything else tramatic could have happened to him in or near the crime-ridden area he lived in. (I had been reading an aurora police blotter and looking at a map and it did seem to have its share of drugs and violent crime incidents). Being quiet and nerdy, he could have been a perhaps easy victim of crime and maybe the first gun was for personal protection. Absolutely NO EVIDENCE to support this, but I was also thinking about motive and why he'd be mad at the whole world, if that was even the case.
Interesting thought, since this was the crime ridden theater. (According to victims postings, and I think rollinginit posted a link yesterday about it.) Nerds do get mugged. My ex has been mugged 3 times in the middle of the day. We don't have a theory thread yet do we? Guess this fits psychological patterns.