I got behind in reading the threads when I couldn't access the DB board, so I'm not up to speed with the details. But if you are going to "drop the rope" then just leave her alone. No deep conversations, no speeches, no notes or emails......no TM's, VM's, etc. You don't even have to tell her to leave unless you don't think you can truly drop the emotional rope. You just do it. You show it. When people don't want you they don't have to give you a speech about it. I don't disagree at all with Gucci, but I've seen some examples of prepared speeches or notes from LBH's who are really trying to drop the rope.....and it would have been better just not to have said anything. KWIM?
If it is a case where words "do" need to be said and then to move forward, then do it face to face, especially if living under the same roof. If not living together, then at the least tell her over the phone. It just seems the manly thing to do. Women write the Dear John letters.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!