What about Legalaid? If you file an application for help with a dissolution, they could give you some support and guidance with all this? I considered it myself at one point.
I know from experience that verbal/emotional abuse can be insidious. Gradually, before you know it, you are accepting the unacceptable as normal. Gather as many objective minds around you as possible in order to make the best decisions.
You could call the local domestic violence helpline and, anonymously, give them the details of the situation. They would know the laws in your state and help you feel a bit empowered.
Just a thought.
(((((((((Lots of hugs to you and your son))))))))))
Heather
"You know, it's times like these when I realize what a superhero I am." Tony Stark/Iron Man
“Focus on what you can do, then do it with all your heart.” Lois Wilson