I knew he was going heel. I just thought that it'd be before or during Mania, to help him win the MITB.
And if you think about it, going heel was kind of a "duh!" type thing. Why has Lashley been on RAW a lot? To buy time. There's no top heels left in ECW to feud with Lashley for the gold. Show's still out, Test got released, all of the New Breed have a feud already, and Holly isn't going to get pushed again. Holly probably lucked out as was, to be in the Extreme Elimination Chamber.
So yeah, I see CM Punk eventually being pushed to the top, if nothing happens to put him back in the doghouse. However, I don't know if he'll win the title off Lashley. Vince likes the big, muscled-up morons. But Lashley may pull a John Cena and let the belt go for a month or two, then get it back.
Hopefully, though, during that month or so, WWE realizes CM Punk's ability to be a big draw if given the chance, and they keep him as champ longer. I don't know. Lashley is still green. I read spoilers on here about him trying to put either Orton or Kennedy (whoever was last to be eliminated) through a table and it didn't break the first time. And I caught at least one time where he went for the one-armed delayed vertical and let go with an arm and almost dropped his opponent, so he had to re-grab him and reposition the guy.
But a Punk/Lashley feud could be interesting. Especially with Punk as the heel. His heel work in the indy scene was phenomenal. He should do the hardliner gimmick and everything. Here's hoping that WWE doesn't screw up and that Punk finally gets utilized correctly.