You know, I really believe that they have to be on their own to work through it for a minimum of 5 years. I too know people who's husbands have come back and for a while everything seemed ok. The trouble is those old demons seem to rear their ugly heads once again because the WAW hadn't totally individuated and finished the job.
I didn't believe this in the beginning nor did I want to hear it, but I now feel that the only chance (if that's what you want) is to cut them loose. Hopefully then they will understand what it's actually all about.