Is there not a valid argument to be had that Jose kind of wanted this to happen, for me this last two months he has just lost his passion and looked like he was going through the motions, maybe once it became clear that the title was gone he just wasn't interested anymore, and struggled to motivate himself and his players, so maybe he did the reverse and almost demotivated his players to accelerate the sacking.
The guy knows he could walk into virtually any club with a clean slate, and arguebly much more funds to spend in the transfer windows, at Chelsea he would have had to clear out players and recruit new ones with limited funds and no CL, a hard job, and one I think wouldn't have interested him.
United Bayern, Madrid, and City all need a top manger, all clubs that are in a much better position than Chelsea, and there Mourinho sits ripe for the taking with no strings attached.... bet he's laughing into his bottle of red tonight.