What Manning is doing is the equivalent of making the legitimate allegation that Obama has strong communist leanings followed by the absurd allegation that he is from the planet 'Zepton' in the galaxy of 'Andros'. The later allegation obviously undermines the credibility of the first, at least in the minds of most people. Whether Manning is doing this intentionally or has been duped by leftist infiltrators of his church I cannot say. But the end results are pretty much the same.
Here's a photo of the sign he currently has hanging outside his church:
