After being away for about a year, I was expecting to read something a bit more positive. It seems nothing has really changed in that year, has it? I'm very sorry.
I have to concur with KAW that it's really hard to offer up suggestions on how to tackle this, as we've collaborated many times already. I posted to KAW that I think, especially in your guys' situations, that unless your Ses really examine why they did what they did, then likely nothing will change. Your H seems like he thrives on distrations: new house, OW, work. The distractions prevent him from looking deeper. But, alas, we have no control over our Ses, do we?