Alright seniors dont flog me too hard on this one but;
OP i'm sorry but this seems extremely petty on your part. So let me get this straight; your kids became insured by your ex but because you didnt get a say in it, you had ex cancel the insurance only to REinsure them again with your permission? That seems like a huge waste of time. If you knew they needed health insurance why didnt you just leave it be? They were insured, awesomeness happening. This sounds to me like more of a control issue rather than a financial one as mom has the cost of insurance either way. She just wants it on her terms.
I understand that this may seem extremely petty to you. I didn't say I would re-insure them with his insurance with my permission, only that I would take his insurance into consideration in my search for what is financially best. I couldn't leave this be, because he was seeking $ from me that I don't have, and he had me believing I was going to be paying him. It's not control, it's panic because I'm broke.