He doesn't. He might have heard other peoples opinions being used as facts, but nobody knows anything that isn't out there. The factual truth-whatever that may be is known to maybe a few people.
I heard this morning, before reading any of the articles or hearing Fitzy's announcement was that they have nothing on Fine, but Fowler will be the one that falls because of all this. From a guy who works with ESPN in some capacity. Like others have said, if nobody new comes forward--they really have nothing on Bernie. The word of the two accusers gets less believable everyday. Not to say their lying, but their credibility is shot.