I don't think this looks very good for the shooter. While I would be very upset if someone took my belongings, I don't think it would be worth killing them. Specially if it was my neighbors belongings. I really can see trying to hold them until the police arrive, but telling the police dispatcher he was going to kill them. Perhaps he felt his life was in danger, but there is no mention of this in the article (which doesn't mean it didn't happen). In reality, if so, he put himself in danger by going after them. I think he is lucky to be in TX right now.