I totally agree with the F-Off, when OW or OM is involved. I understand how you have to shut them out to show you dont accept their actions and that you can not get their mind to focus on you and your actions until the OP is out of the picture completely.
piano, dont be so hard on yourself! you took some chances... but you can easily go back into detaching and going dark. Just as you cant do anything about taking H away from OW, you DIDNT do anything to push him towards her!