It is interesting when someone is under stress they will slip and let out little things that they never actually meant to. So look at his actual words:
So here could be what Joe let slip:
No, it is not true., So because of double negatives, it is true.
Secondly, "“I’m saying unequivocally it never, never happened…So, he is saying clearly(unequivocally) that it Did happen. Again double negatives.
And Finally “It didn’t, it never happened”… So if it didnt never happen, then it did happen.
I’m with New York Times. It needs to be investigated.