[Backstabr]

I'm dinking around, rebuilding my bankroll after blowing it on a grand vacation. Tried a stud8 SNG. Fun stuff.

First level, 15/30, 2 ante, 5 bring-in, stacks ~800. Hero's dealt (K9)K. A deuce brings it in, a five calls. To your left are a seven and a jack. Kings and nines are live. Your action?

I vote fold. Am I wrong? Is this obvious?