I think Beck as the interview drew closer was starting to have his own doubts. The reason for the litmus test on the blackboard, telling the audience if their not getting what they wanted, to turn the channel.
Yup, you're right, and thanks for the reminder about Glenn's tip to viewers to turn the channel if they didn't think Massa's info affected them / were bored / weren't interested.
I'm a Beck fan... I wonder if he'll mention the Massa interview on his Fox TV show on Wednesday. (I rarely hear his radio show)