Sure he's not in the clear, but the point is that they can't prove it. I'm just spitballing here....but if Kane said something like "We had some rough sex. She scratched me a bit, I bit her shoulder...that kinda freaked her out and she left...," then unless they have some more evidence we haven't heard about, I just don't think we're gonna see much here. Short of the victim coming out and admitting that she made the whole thing up, I don't think there's any way for this to be more "in the clear". In fact, that's a good question....what would have to happen at this point to make him "in the clear"?