Don't you have to have done something in order to be imprisoned? His wife's a nutcase. That doesn't say much for him but it also doesn't make him capable of predicting his wife's actions and being thereby 'culpable'. Also this 'crazy person equals loaded gun' stuff is a bunch of crap. How was he supposed to know that she was 'psychotic'? How does Kathleen Parker know she was psychotic?
It seems that Kathleen Parket is, also, a nutcase.