I think it unnecessary for your H to tell your S1 that 'mommy slammed the door in my face'. Sounds like he's trying to deflect some of the blame from him, and put it on you.
Have no real advice, except to say that I am sorry you find yourself in this sitch. It really sucks! Just try and deal with him calmly, but make sure your protect yourself financially, and keep you boundaries in place.
Take care.
Me:57 H:52 M:28 Got another lawyer last year and filed. D35,S/D twins28,D22 EA4/04 End? Who knows? "Life is like a mirror. Smile at it and it smiles back at you." — Peace Pilgrim