Hi - Just reading your posts and I was puzzled by things
1. Why has PDT not advised you to expose this EA to OW husband ? If it was me , I would be throwing the cat amongst the pigeons. I know the concern would be the bust up of OW M but then it may also be her wake up call if her H decdes to leave. Once the excitement is taken out of any affair , reality can kick in. Big call but one you should consider.
2. Your H seems insecure with all this baiting. Has there been any C at all? Maybe he has issues that just need understanding. It does seem all so childish. It could be that he wants you to be the one that leaves , therefore making him feel less guilty. Stick to what you are doing with regard to reactions. You are not playing his game and he must be so frustrated. If he wants to go , then let him go. Be it on his own head !