I can't possibly imagine that an intelligent person who's basically got a huge target on his head from every government in the world would act in any way that could be considered questionable.
They're looking for some way to crucify him; do you really think he'd just hand them something?
If he did do it, he was presumably drunk and horny and not really thinking straight. If he did do it, it's not a jump-out-with-a-knife rape, but a "hey stop that"/"naah c'mon" type rape.
The dude doesn't exactly seem to be one of life's alpha males. Suddenly getting a lot of action at the age of 39 due to newfound fame could easily have gone to his head. Who knows?
They're looking for some way to crucify him; do you really think he'd just hand them something?