Bravo!! John. I'm glad you finally saw through her crap and decided to do what is right for YOU and YOUR SON. Just remember how unstable and manipulative she can be when she feels she's losing control.
Be prepared for her to dig into her bag of tricks: anything goes. Threats, Attempting suicide, taking your son, claiming abuse, going child services, police reports, etc.
I would be very careful of having any more confrontations alone with her in the house. As much as you can bring a witness with you.
Based on what you have described from the past there is no telling what she is capable of doing.
