Just wondering why you chose to use the Last Resort Technique? Have you tried other things before with no success? Sometimes I think people subconsciously choose the Last Resort because it shuts out the other person, can maybe be vengeful but masked as "strategy". I'm not saying this is you, but I've seen a few people who use it as a first resort rather than last. I think Michelle says in her book that if you use last resort be ready to end your marriage if it doesn't work. Be really sure this is the route you want to take. It sounds like your W isn't in a PA yet, so what is the rush here? I do know the pain you are in and when we are hurting we want it to end NOW! I'd also not contact the OP, as Muddle said, they know what they are doing is wrong and are doing it anyway. Another poster here mentioned that the OM in his sitch told his W he felt no guilt because God told him he was doing the right thing! Where do you go with that kind of thinking.
