Snodderly's rollercoaster post was right on the money. I hate limbo too. The weird thing is that likely xSO (and your H) are fine with the status quo for now.
Last night I needed some perspective so I read the Midlife Crisis chapter in DR again. I do wish MWD had dealt a little more with the "middle bit" in terms of strategies but the chapter does help with perspective.
Implimenting detachment and zero expectations are a whole other story. Almost eight months later for me and I wish I was there. I am working on it - and I have no doubt that you are as well.