You talk about things being better for the kids if H is at home.
But I dont really see what is 'better' about it. He can be as involved as he wants to be, regardless of where he is living. So what benefit is there for him to be home when it will just breed disrespect and resentment?
To me, it sounds like you think you can change his mind given enough time in the same house together. Frankly, its crazy hard - read any of the sitches involving an open affair between spouses living together. In my mind, it's best to let OW deal with everything - why should he be allowed to 'play family' while engaging in something completely disrespectful to the family unit?