I'm on board now with Heyman turning on Punk and Reigns. They both used and abused him to get what they wanted and it's one of those times where he didn't just turn for the sake of it. He gave himself up for both of them, martyred himself for them. And they threw it back in his face.
I don't know about Rollins turning straight up heel. I like his character the way it is now, and there's nothing Heyman can do for him that he hasn't already done. Besides, Cena is supposed to be the number one heel now. If they try making Rollins that same kind of character, it goes against everything he's been saying for months and it's inconsistent with the story they've been telling with him. He can't be the same heel as Reigns and Cena.
I don't know. I just hope this isn't one of those "book for the moment" situations and they know what they're doing with Rollins going forward.