I may be wrong about this but I thought Beck said he didn't think the BC was the thing to focus on (I'd characterize it as painting yourself into the corner), since there were so many, many, many other ways to point out what a total disaster Obama has been and that we're going over a cliff due to his administration.
But the BC is the easiest way to get Obama out of office. It either shows he wasnt born in the US, was adopted, has a different dad, changed his name to a Muslim name later in life post conversion.
It also weakens Obama. Beck avoiding it is odd to say the least.