I'm not sure if you could condemn anyone writing things with violent themes because of this. Obviously he WAS disturbed. But I fear that people will point fingers at anyone writing content that is on the violent/controversial side now. I mean, horror novels, stories about rape, violence, etc have a place in the literary world as much as anything. Just because you write it doesn't make you a crazy person. Like I said, not defending him, he obviously needed help and this was just one of the many warning signs. And yeah the writing is also pretty bad in general as beard suggested.
-Tom