> what would EJ gain by lying?
AirBnB has the potential to become very disruptive for the whole hostel industry. This means that there are people, some of them with deep pockets, some of them less than honest, and some of them both, who really want them to fail.
What's AirBnB's main challenge? It needs people to trust each other, in a society which promotes mistrust. The easiest way to destroy them is to prevent this trust from being created and maintained. If you wanted to destroy them in a shady way, your best bet would be to create a smear campaign based on a traumatizing violation, exactly such as what allegedly happened to this woman.
Moreover, if you were to create such a smear campaign, your best bet wouldn't be to have an accomplice playing the victim: it would be to choose a perfect genuine victim (likable, vocal, blogging, emotionally sensitive, and with good writing skills), and send real thugs actually destroy her home in the most traumatizing way, including psychopathic "nice" e-mails sent while wrecking the place havoc.