[UMTerp]

One more thing - a stop and go is generally used when you are in the blinds, and facing a single raiser that's possibly on a steal. Low and mid pairs are good for this play, though late in a SNG, you run into situations where it is correct to run a stop and go with any two cards. You call his bet preflop, then lead out on the flop. In this situation, the preflop raiser showed excessive strength (reraising an EP raiser) - not the ideal spot, especially with the still relatively deep stacks.

It's also noteworthy that MP3 had a large stack early in the SNG - was he showing unbridiled agression with marginal hands previously? If so, that would make the preflop call with AQ a little more palatable, but it's still usually better to err on the side of caution here.