First of all, get your facts straight. Kobe was not exonerated by the judge. Instead, the charges against him were dropped by the prosecutor when the woman indicated that she would not testify.
That's very far from being tried and found not guilty. Furthermore, in Kobe's press release, he sustains he did not rape her, even though he acknowledges that the woman do not agree with him on that.
To top it all off, she sued in civil court, and eventually settled before that trial.
So the fact is that we don't know for sure wether he raped her or not, and we will probably never know. That doesn't mean he didn't do it. The trials never got that far.
So, everybody is free to speculate wether it happened or not, regardless of what Kobe claims.
To me, if he didn't do it and wanted to cleanup his name, he would not have settled the civil case, and would have followed through with it.