I was sad to read your in this sitch w your kids being right there with you! Your xh is soo far gone right now there is absolutely no reasoning or trying w him! He really is circling the milky way!
I would try to speak to him as little as possible. Since talking doesn't work anyway I would go silent! I would also tell my kids to keep it as simple as they can, for their sake, because arguing w him or trying to reason won't work. These kids need to heal, and it may need to be done w as little of xh as possible right now.
Does your community offer a food pantry to stock up on some goods once a month? Or, do you have organizations that will step in? I don't know where your at, I thought I remember your somewhere in Europe, but I may be crazy. Many moons ago I got the greatest help from Catholic Charities, you don't have to be Catholic, and they gave food, clothes, rent, and free counseling to me for over 2 yrs.
Be very careful trying to prove anything about xh, and don't show your hand, ever, it's his biggest weapon against you! I agree he is under some kinda spell w ow, you can see he's still trying to keep her happy at any cost!
Again, I would stay as far away as I could, find some help where help is given! Free clinics health, food pantries, organizations, teaching hospitals for your root canal.
I'm sorry your going through this, it's a damn shame, but this site is free and it the best money could never buy!
<3 dmarie
The past can't be ahead of you in the future. You don't have to figure it all out, just pick a direction. What's next...I don't know but I can't wait!