Remember, his "story" is that they smeared cocaine all over his daughter's hair which resulted in a false positive. Then they tested the wrong sample, from where? Who knows. But anyway, somehow the wrong sample inherited the cocaine from the cop touching his daughter's hair.
Then the result was wrong on top of that. But that's still because the magic wrong hair sample magically inherited cocaine from the original cop. And he has the proof on video, but he screams like Satan when you try to get that video. "MUH KEEEEEEEEEEEEEEEEEEEDS!"