AFAIK, Lavabit might very well be able to do just that. If Lavabit can convince the appeals court that providing the keystone to the entire security model of t

AFAIK, Lavabit might very well be able to do just that. If Lavabit can convince the appeals court that providing the keystone to the entire security model of the whole company imposes an unreasonable burden (in my mind, a quite convincing argument), they can vacate the decision and thereby set some precedent that compelled key disclosure by subpoena is, at least in these circumstances, inconsistent with US law.