WH, you're right - your h creates chaos and dysfunction. He is not a nurturing, responsible parent. Has the GAL been contacted? Does your attorney want to amend the placement order? It is not acceptable to have your S watch D. That's a burden for him. He's already carrying a heavy load in his heart and mind. It's really too bad that your h can't see that.
I had really hoped, for your children's sake, that things would settle down once you moved. If your h had good parenting skills this current arrangement could work, though I know you miss your kids terribly when they're not with you.
I know this is hard. Try to spend your time in a meaningful way when the kids are with their dad. Work on you, your "nest" and anything that brings you joy. Follow your attorneys advice and let him sort out the rest. I do think in the end the legal system will work for you. Your h was given a chance to share custody. He has looked at this as something that he's entitled to, as if it can't be changed. He's blowing it.
I know you're upset and anxious, WH. You're kids will be alright because you love them. Continue to create a warm, nurturing, safe place for them to come home to. That's all you can control right now. Trust that it is enough.