Except rape charges will trump the non disclosure agreements. Though how you get them to stick this long after the fact is beyond me. That's the problem with this, unless one of the actresses was under age then it becomes a 'he said, she said' thing. There will be no scientific evidence. Even if they can all describe how his dick swings to the left (for eg) this doesn't address consent. Did they kick and scream and were they heard by a third party will be as good as it gets.
Which is why these things are so hard to prove. There are defence lawyers in the states well versed in such cases. Remember they didn't get Slick Willy either, because consent.