I think it'll solely depend on what Alpecin want to do. If the get Mvdp in the break, the break will win it, if they think he'll get worked over they might actually pull and let him + the GC guys battle it out.
I don't think UAE or anyone else will control the break. UAE will want to save their guys before an important stage tomorrow and no other team should really fancy their chances enough to pull the whole day. I mean, Milan, really?
Edit: okay, I might've overlooked the possibility of Vaughters wanting to "honour" the jersey, that could actually happen.