Nah, I think he's going to stay unmasked for awhile. It would be stupid to put him behind it again after 2 months. Counter productive
Anyway, heres what I think about the Kane/fire story:
He's going to come out unscathed! He was burnt once, so he's already horrible scarred (yeah right).
So any other burns shouldn't leave any damage (yeah right).
So he will return, all pissed off as usual, breaking people over his knee. He will have a new outfit, because... well he just needs a new one. And he'll stop doing his "Flying Arm"-whatever off the top rope. that move is horrible to watch.
anyway, back on subject - He's going to be fine. A little pissed off, a little balder. Bigger chip on his shoulder.