Often I am very proud of my male techie compatriots, today is not that day.
You sound like petty thoughtless children, arguing as if this were a debate over the rules in some D&D game, rather than an attempted rape, that through pure luck and forthrightness the woman was able to escape.
I'm not entirely sure why your first thought is to disbelieve and come up with reasons why it might not be true, regardless of the fact that her claim is more likely to cause her harm than good and her entire motivation is to make sure nobody else suffers the same fate.
In fact I'd go as far as to say you'd be pretty foolish if you think she's likely to come out of this smelling like roses and go on to have an even more successful career because of it, you'll also be struggling to explain to me how a woman can manage to punch herself in the face and steal her own possessions.
For the purposes of balance I went over to his blog to see what he had to say for himself, what did I find? No explanation of the events of the evening, which he described would be 'adding to the drama', but he did take the time to question her sanity, call her a liar, and suggest she has a mental disorder, rather than mentioning that he went to her room, he merely describes her as someone he just happened to be at the same conference as.
On reading her recollection of the events of the evening they seem sensible straight forward and level headed, his blog post seems ranty, unhinged and smarmy.
But to be honest I'm not sure why slashdot's first response is to take his word over hers especially when he has yet to actually give his word, you might want to seriously question why this is, you might discover something about yourself that you need to address.
Sometimes people we thought we knew, turn out to be bad people, yes it's difficult, yes it's unnerving, but perhaps you should man up and face it, because when revelations of other incidents surface and they have already started to, you're going to feel pretty shitty that you were arguing pathetic pseudo legal points about how we can never know who did what to whom.