Putting aside the questions of blame, and the eventual intent of the individual. Putting aside the question of culpability, and whether anyone acted inappropriately.
Thinking about this entirely from the perspective of AirBnB. Doing what a company is supposed to do, by law, and considering only the shareholders.
Given what they've done, do you think it's the best thing to have done to give the company the best chance of long-term survival?
I don't.
Leaving out the morals and the ethics, assuming we only care about the company's survival, this issue has to be dealt with in an open, transparent, and above all seen by all to be fair manner.
Providing for the short term care of this customer is vital. Whether it's right or wrong, ethical or moral, if they don't do it, people will say "That might have been me."
Above all else, that will kill AirBnB, and they are seeming to do nothing about it.
Leaving aside the moral and ethical considerations, working only according to the game theoretic standard of doing right by the company, what they are doing is clearly not in the best interests of the company.
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ADDED IN EDIT: From http://ycombinator.com/newsguidelines.html :
Please don't bait other users by
inviting them to downmod you.
FWIW - I didn't down-vote you. I think you're wrong, and I don't think you've thought it through enough, but I didn't down-vote you. I took the time to reply because I think your view is common enough, and you had the courage to say it out loud.
But as I say, the current actions (as we understand them to be) are not in the best interests of the company or its employees - really, they're not.