So far he doesn't seem to be a particularly careful or crafty person. (Just a brutal one.) I'll bet you if he pushes it, he will almost certainly put himself in a position where he is legally culpable -- in terms of federal law, not just state law, pertaining to capital crimes involving handicapped victims.
Let's keep our vigil: We are the observers of what goes down. And then pray God for justice. Thank you so much for the fine post, cpforlife.org.