Easy to say with your #1/xx. How about #5/10, who you want to retain and push, and now he says he might want to get out. #6/10 has proven to have a receptive attitude and wants to improve. Do you hold on to #5, who wants out, and kick out #6, who wants to stay?
BTW fellas, unless my experience is well outside the norm, you're gonna end up writing your own RRFs. So if you apply for VSP and get denied, but you still really want out...just write the shittiest RRF you can, letter or no. Use all those "continue to challenge" or "one of my best" bullets from when you were an LT.