I have a different take on it. I think that Wheeler didn't know that the interview had started. I base this on having been present for a number of these sorts of interviews and witnessed what often happens.
The interviewer secures the player's agreement to be interviewed. They get into position and the camera frames the shot. The interviewer talks to his director and/or gets advice from the control booth. There's often a few sentences back and forth in quick shorthand. During all of this, the player usually stares off into space, or wipes his face, or tries to get his hair to lie flat. For the more experienced players, they just wait in boredom and ignore the crew chit-chat. When the interviewer turns to the player and says something like "We're here with Blake..." or "Blake Wheeler has just...", that's when the player pays attention and waits for the usual clichés before spouting the usual cliched answers.
On Saturday, the interviewer starts talking facing the camera, segues into a question and then finishes up by turning to a much taller Wheeler and raising the mike for him to answer. It's only at that point that Wheeler, who wasn't listening to anything in the noisy arena, realizes that he was asked a question and didn't hear a word of it. I don't think he was spaced out or being difficult, I think he just didn't realize that the interview had started.
Went back this afternoon and watched the interview again and I'm still convinced that's what happened. Of course, being HFBoards, everyone's entitled to their own opinion and may want to spin it differently for their own purposes.