Nifong had no obligation to relate anything to defense counsel except the results as they pertained directly to their clients, so if Cheshire said that the SBI lab found nothing to indicate that Mangum had had sex recent to the alleged event, that was true as far as he knew. He just didn't have the whole story from Nifong. The more I think about it, the more surprising it would be if Nifong had given the defense that information at that point in time.
Then, a miracle happened!!! Mangum remembered what the three looked like!!! Halleleujah!
Well, you could be right, and we are all just speculating.
I would think Cheshire would be livid if he knew that Nifong knew after the first round, that CGM had sex with one of several men. I would think Cheshire would have been hollering about it not being in the first report.
I can't imagine why Cheshire would not tell the media that Nifong withheld such exculpatory evidence from the defense.