I may sound silly but, wouldn't it be great if satoshi appeared, just once, to sign a message saying that CSW is fraud? Of course the main point behind this action would be to save Core Devs from paying absurd money in legal expenses
Nah. I don't think that would really make much difference in terms of CSW's ability to drag people through the courts. It would be a solid proof for the community (not that we really need it) and maybe it could be used in a court as a proof, but they'd still have to go through trials and therefore incur legal costs.
And of course, crashing the market would be an undesirable side effect.