This is probably too simple and perhaps to good to be true but the WTBTS practice of officially announcing a person by name at a meeting to be "no longer one of Jehovah's Witnesses", combined with the WTB literature that clearly states how to 'treat' such named person is a clear act of Public Defamation of the named person... an act that one would maybe have legal grounds on which to take out a lawsuit???
I suspect this is an angle that may have been over looked from a legal perspective...
It's just a thought.... do we have any Lawyers in the house???