So glad you decided to 'sleep on it' before sending the letter. I also think that anything which is intended to *make* him feel anything, or if you're hoping to get a reaction from him- should be held back. At least you got your feelings out of your head and onto paper, that always makes me feel better!
Sounds like your H is enjoying being around his family again.... Another positive step in the right direction. My only warning- b/c I struggle with this- is to not get attached again. Don't have any expectations that this will last and that it means anything. Everytime my H gets comfortable for a few days, I find myself getting hooked again- and it's that much more hurtful when he goes back away.
You have proven that you are stronger than me in that sense, and you've even started to move on... Funny that after you mentally accept to 'move on' he starts coming around more. I wonder if you give off a vibe that lets him know what your intentions are?
Purg - your comments are so dead on. I find it very hard to not get attached when our M and family seem to be like a real M and family and its' very draining pretending I'm happy when that happens because I have to keep so much crazy BS stuff inside when we're together. Acting "as if" is very tiring. That should be an Oscar category for tomorrow night!
I will say it's true that when you start to move on, the WAS definitely picks up the vibe and starts working back towards us. I see this at home for me too and I think my sitch is very much like barely's.