Based on the facts presented, I would be shocked if he got custody of the children. When a parent commits domestic violence against another parent, there is a rebuttable presumption that the parent who committed the DV should not have primary custody of the children. At this time, you may want to seek a no visitation order until certain safe guards are put in place such as him attending anger management classes and/or therapy to deal with his anger issues. You must show that you are trying to protect your children or you run the risk of losing credibility with the court. Good luck!
I think you owe it to your son to go back to court and seek a no visitation order or at least monitered visitation. And do not let anyone else do your thinking for you.
My name is Stephen R. Cohen and I have practiced over 38 years and can be reached at 213-819-1171. I practiced mainly in Los Angeles and Orange County, California. I am not seeking clients from existing relationships with other attorneys, and give only limited advise over the phone (the phone is primarily used to set appointments), these services do not create an attorney client relationship. I apologize for mispelling< as I am a lousy typist, My answers may offend as I do not believe in pulling punches or sugar coating the truth. Further regarding courts in other states my opinions are largely based on logic and what I think is the modern trend which is to consider the needs of the child.