In this Nov. 2, 2011 file photo, Republican presidential candidate Herman Cain speaks on Capitol Hill in Washington. (Carolyn Kaster/AP)

Here is what the Herman Cain campaign has done over the last five days: they have made several claims that are either untrue, or not backed up by evidence, and then they have reversed themselves.

The latest comes from Cain’s campaign manager Mark Block, who last night on Fox News, pointed a definite finger at Curt Anderson, an adviser to Texas governor and Republican presidential candidate Rick Perry, as the source of the POLITICO story. Cain, a former restaurant executive, is facing sexual harassment allegations, which were first reported by POLITICO.

But now, Block has changed his mind. Less than 24 hours after pointing at Anderson, Block had a different response to questions about the involvement of the Perry campaign (video after the jump).

“All the evidence that we had and what has transpired in the last two weeks lead up to Mr. Anderson being the source. We were absolutely thrilled that he came on your show and said that it wasn’t him, because Mr. Cain has always had the utmost respect for him,” said Block. “I’m going to do the same thing that Mr. Anderson has done and move on. Talk about issues and get off of this ‘silliness’ as he called it. And let’s get on with the campaign.”

Hmm. So, the Cain campaign has been seemingly involved in trying to figure out the source of a POLITICO story for two weeks (one that they have also claimed to be surprised by and unprepared for) and that investigation led them to Anderson, who had worked for Cain when he ran for Senate in 2004.

Just last night, in a phone call with supporters, Cain said, “We’ve been able to trace it back to the Perry campaign that stirred this up in order to discredit me. The fingerprints of the Rick Perry campaign are all over this, based on our sources.”

Now, Block at least seems to be questioning those same sources, and is backing off of pointing the finger at the Perry campaign, since Anderson now denies that he was the source.