Sometimes a person can be a boiling volcano and the things that set him or her off have nothing to do with any other persons residing in the home. She may or may not be an innocent bystander, but if you've ever lived around or with an explosive, abusive person, the things that 'set him (or her) off' can indeed be 'committed', if you will, by others who are absolutely innocent bystanders. She, or she and her husband, may have acted in ways that set each other off. But if he was truly an explosive personality, they were already tiptoeing around him with his low threshhold and boiling point. We don't know yet. I guess my point is that if he was a boiling volcano, and it seems so, no one person need to have set him off, any everyday, innocuous occurence could have done that.
Boiling volcanoes who really are totally unpredictable (Anything/one might set them off.) and explode with violence at any/everyone are in prison. They are felons because they cannot/will not control themselves. Their acts of uncontrollable and unpredictable violence (volcano eruption) land them in prison or in an insane asylum.
Boiling volcanoes, like husbands/wives, people who work for a living, have children, are law-abiding, church-going, have friends, decent relationships with family, community, etc., OBVIOULY can and do control themselves. They AREN'T felons or on medication because they learned when they can and cannot explode. They aren't mentally ill or psychotic....they are just angry people who marry the doormats. Their explosion IS NEVER at the local cop, minister, clerk or their friends. It's always at their spouses and children, the doormat and captive audience respectively.
Sorry, but I've seen TOO many volcaoes who explode QUITE selectively.