It's the "buyer's remorse" comment that is that problem, for him to say that makes it look like he was blaming the woman and that was not right. It's one thing to believe he didn't have a case, it's another to pass judgment like that. He needed to choose his words better.
It seems that she invited him into her apartment and never verbally protested his advances. Poor word choice, but he (Buck) was basically arguing that she could not win the case.
I should also note that this story isn't even on the Denver Post website.