It just does not sound like he should be staying with W if that includes OM. Especially if he is showing signs of violence. It may be too hard for him to choose between you, it might be a decision you have to make, based on what is best for your son.
Me 48 H 46 S 11 M 2004 BD 8/13 H moved out 2/15 -live in the present, enjoy the beauty around and within you, explore your new future-