Nice idea, won't work. Wish it would, but it won't. I practiced law for years and this shit is exactly why I refused to take on divorce cases. Nope, no way, no how! I was forced to do one as a junior associate at a partner's behest and it was hell. Two 60 somethings without a pot to piss in. I got the wife, who just wanted out of the 40 year abusive hell she was in. She was needly and called multiple times a day, to the point I started tracking every second and billing her (I was supposed to anyway, but you know, there is some leeway).

He was a dick. Arguing over stupid shit like old books and a teapot that cost no more than $1.99 at KMart in 1965. Uggg!

The thing is bullies don't see that they're wrong. Guys like your soon to be ex don't see their fault. They see you, breaking up the family and doing all the harm to the kids. That's how they rationalize it even thought we both know it's completely wrong.

Here's what I'd hang in my office, "What you're doing now is gonna bite you in court....think before you act."

I'm not sure where you are in the process. I'm sure you ahve great representation, but just some offhand thoughts. Every single time he financially abuses you and as a result your kids, write it down, date, time, circumstances, details. Keep a log. Any correspondece between you two, text, email whatever....keep it. If he tries to pick a fight in writing, don't take the bait, keep the high road, "clean hands" are a thing in court.