[Slim Pickens]

I think your read on the opponent is critical here. Any solid player who smooth calls a raise like that for 1/5 of his stack is hiding something. A "typical" 22's opponent will call preflop with a lot of hands, so I'll just continue assuming "normal" opponents. I see a lot of garbage coming along here. The real problem with that flop is that a lot of garbage just hit it, and you didn't really. On the plus side, I don't really see even a typical 22's dufus calling with anything less than TPTK. PP's 99 and below (~=77) are folding to a push immediately, as are any middle and some top pair hands. You're only two decent options are to push here or check-fold, and right now I'm leaning toward a push.