Via Fleming and Hayes, who say two eyewitnesses at the scene recognized this guy as Frank’s boyfriend. Bielat’s campaign recognized him too and confirmed his identity when asked by Brian Faughnan. Three possibilities for why the BF would do something this lame and embarrassing: (1) The Frank campaign is increasingly nervous about the challenge from Bielat, especially considering that Bielat outraised him last quarter. (2) The Frank campaign is prone to abrasive jackass behavior, mainly because it is, after all, run by Barney Frank. As Gay Patriot says, “You just can’t talk about this guy without laughing at his hypocrisy — and his arrogance.” (3) Per Obama’s unified field theory for why bad things happen to good Democrats, the Frank campaign is in the grip of economic fear that causes it to do irrational things contrary to “facts and science and argument.” Feel free to choose all of the above, but number one is my favorite.

Doug Powers wonders what would have happened here had the roles been reversed and, say, Bielat’s wife been caught heckling Frank. My guess: The single most fulsome “to what uncivil depths hath these wingnuts sunk now?” column ever written by Frank Rich. Alas, we’ll never get to read it. Exit question: Frank and Bielat have debated five times? Why would Frank sacrifice some of his advantage in name recognition by agreeing to that many forums? Sheer bravado?

Update: Here’s the Boston Herald’s official version of the video.