Emmy honey, it's time. Now the time is ripe to go for full custody, supervised visits only if any. I am sorry you are hurting, but this man is fully off his rocker. Get away and save yourself and your kids.
There is NO ONE with the power to be able to put someone else into a psych hold. They ONLY do that when they are a danger to themselves and/or others. That should be your reply EVERY SINGLE TIME anyone says anything about it. Unless you turned into a doctor overnight, that cannot happen.
Sending much love your way!
XXX