Nifong absolutely has to prove his case with evidence other than the AV's testimony.
Well, then he has a problem because I don't think he has a thing besides the accusers testimony.
The bipolar diagnosis and the alcohol plus Flexeril help because both could affect the accuser's perceptions. I don't think she hallucinated a rape but I don't think she perceives things normally either. That probably helps explain why she can't keep any of her stories straight.