Wow, you sound like a really good mother. I didn't read the whole thread but I can really feel for what you are going through. The father is definitely sabotaging your efforts at a reasonable relationship with your daughter.
For people who are not separated or divorced, the kid's STUFF issue is just as big a bother. We still have a lot of both sons' belongings, from childhood stuff to power tools. As they move out to places they can afford, they discover they don't have space for all the junk they have. And it's so hard to sort THEIR stuff, so it just sits in boxes stacked as nicely as possible. When you move, you're going to have to deal with it; so give the daughter time "daughter, in 2 weeks I will be moving. Since you won't tell me what you're planning to do, on X day I will drop all your stuff at your father's house"
You're still going to get the blame for whatever happens, but you have to take care of yourself first.
I think in the long run, your daughter is going to end up back with you because of the lack of care at Dad's house. I wish you a lot of luck with this, I was the product of a divorce and it's a very hard road to be on, especially with teenaged daughters!
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