[Fatman]

My theory on the shooting is that the kid tweeked out and shot those two students in the dorm room. Then he realized what he did, and said, "Oh crap, I'm gonna go to jail and/or get the death penalty because of this...hmm...well, since I killed already, might as well make it a media circus!! Make some homemade tapes, and go out in a blaze of glory, could be a fun time!!"

I donno, I might be speaking out of my hind end, but it seems to me that he killed the group of students because he just plain didn't care at that point. He knew he was gonna die anyway, so what did he have to lose?