It has not been refuted. Like you, I saw the Imam on Rita Crosby's show last night and he spent about 10 minutes explaining why he thought it was Gadahn (cheif amongst them was the heavy breathing while 'excited'). He also spent a while talking about how Adam converted and eventually fell in with the 'wrong crowd' at school.
This guy should be all over the news talking about this but the election is more important. I can't help but think they will try to pull something off Tuesday though I side with others in the fear that the real danger lies just beyond the election.
Not if Kerry wins , which I will pray all night he does not