I do not think that is the sign of a healthy mind. But it is not grounds for a murder conviction, nor accessory to same, no matter what the slush-brains here want to make it.
IMO, this man is in his own personal Hell, and will undoubtedly remain their to the end of his mortal life.
Did you read his interview in the New York Times magazine? He sounds like he's ready to move on to a new honey and start popping out more kids.