If he has "decided" to be "free," well then I suppose that he would consider himself free to sleep with you if you allow it (just as with every other female on the planet).
I would hope that he hasn't decided to divorce you, and then slept with you anyway, but then he's been doing that for six years now, hasn't he?
As to MLC, don't necessarily consider all six years. He made his "plan" in 2001, when maybe you weren't so fun to be around. He probably did that as a way to keep himself from leaving at that point. The music stuff is somewhat newer than that, isn't it? At least the renewed interest and heavier involvement? That might be more like when the MLC hit.
In light of last night's events, I would suggest that if things are going similarly tonight, you try to initiate a bit of snuggling. It wasn't clear to me if he rebuffed you in that area or you were both too self-conscious to initiate. If he normally liked snuggling before, he shouldn'd mind now. If he only snuggled before in order to smooth the way to sex, then he might think he can still get the sex without the snuggling. Not good.
Anyway, if you snuggle him tonight and he pulls back, you will know that he is treating you strictly as a booty call.
