Maybe not technically, but he is a founder and I think he should take some responsibility. The wife's power came from his position in the company, and she was able to get away with that only because she was his wife. If my partner was coming into the office and intimidating employees at my company that is something we'd be having serious conversations about the minute I heard out about it. Of course I also like to think I wouldn't marry a psychopath, but that's neither here nor there, because if I left something like this for HR to deal with I'd feel like an impotent twit.