You are probably queasy because you are thinking so hard about this. Like you do just about every situation.
How do I know? Because I used to do similar things. I worked out every single scenario I could imagine. I let the monsters run free in my head to the point that if I could have charged them rent, I would be a rich woman.
Sure you are going to be adversaries in an upcoming legal battle. One that might not be so bad if you can develop a working relationship with your H now. And if the thought of reconciliation ever were to come up, it would definately be easier if you had a working relationship, instead of a relationship that looked like a chess match.
The legal and the emotional need to be separated and you are far from that right now.
What happened to living in the gray?
"Acceptance doesn't mean resignation. It means understanding that something is what it is and there's got to be a way through it."--Michael J. Fox