Romney was not flustered by what Obama said. Romney was trying to get Obama to confirm what he had just said, in a step-by-step fashion. Romney was slowly building the case against Obama in the debate using Obama's words just spoken, when Crowley stopped Romney in mid-thought.
It might look like Romney was flustered, but he was stopped cold by the moderator. Twice before, Crowley had stopped Romney in mid-thought saying that "he'd get his chance later."
"Later" never came.
-PJ
I don't think that matters. 0bungles made an unforced error and Romney made him reiterate it so there would be no mistaking 0bungles' intentions adding a forced error on top of the first one. All Candy the Hut accomplished was to put her reputation on the quicksand of 0blahblah's lie. Romney got what he wanted.