If this wasn't about politics, then why was a self-described (note to Bim I never said you "ran" a huge PR firm) "Senior Associate" for a subdivision of one of the world's largest PR firms involved in the call? A PR firm which specializes in "grassroots organization", "issues management" and "crisis communications"?
Bim isn't an artist. He's a political consultant.
And I'm pretty sure the White House is in "crisis mode" on health care right now. Who better than the professionals that handled Exxon's PR after the Valdez disaster to handle the health care PR debacle?
Why was he involved if not as an expert trying to get the artists to take the White House's message and make it appear to be a spontaneous "grassroots" effort?
Again, look at the date at that last twitter. I'll note that Bim has been twittering since July 28, 2008. Between his sign up date and a year later he only twittered 19 times. None of them political.
One year, no political tweets.
After the NEA conference call he's twittered 38 times. Almost all of them political tweets.
Read it all here. Do it.