Lee did the same thing in TampaBay, in game one. Coming into the series, the Rangers had that big monkey on their back -- their 9-game playoff losing streak. Lee shut down the Rays, Texas took a 1-0 series lead, and then all of the sudden CJWilson is starting game two, thinking about a 2-0 series lead, and not thinking about trying to avoid an 0-2 deficit. It makes a difference.
One more thing that Lee did is plant the seed of doubt in the Yankees' head(if it wasn't there already). He's now 3-0 against the Yankees in the playoffs in the last two years. Some of those Yankees have to be thinking, We have to win the next three games or else we're facing Lee in game 7, and we're not beating him.
Eric Nadel put it best during the radio broadcast: Incredibly, Lee somehow keeps getting better in the playoffs. The guy had already pitched two gems against Tampa Bay, and then he actually pitched better against the Yankees. Truly incredible.