Kip's response to this entire situation is a case study in how NOT to handle a PR crisis. Rather than get in front of the claims and be upfront about the situation, he went silent, and then when he did address them, produced excuses that are not believable and disingenuous. I suspect that had he come clean out of the gate and admitted his indiscretions, this would have lasted about seven days. Instead he let it get out of hand and the story wrote itself, ultimately producing two hundred and fifty of pages of discussions, multiple references on other websites, an article in a major newspaper and a broadcast on NPR.
He let others frame the story, and without a counter-position from Kip himself, there was no shutting it down. Here we are a full year after the article was published and we're still talking about it. Contrast that with the situation Letterman had with his intern. He came clean, nipped it in the bud, the news covered it for a brief time, and then it was done. This is why you stay in front of the crisis.