I just want to clarify what I think the true chasidus mehalach is, based on what I learned with a shliach bechavrusa.
There is a concept of a believing that one's Rebbe is Mashiach. The Rebbe held of his FIL as Moshaich and the chasidim of the Rebbe should hold that he is. But that does not mean they actually ARE because there cannot be more than one moshaich. (Especially once you consider chasidim of other Rebbes). While the Rebbe was alive, the chazaka was that he was Moshaich. Now that he is niftar, he clearly is not. Rather, he takes on the status that the friediger Rebbe did, of a hisnagus of.moshaich despite knowing he clearly isn't. So what did the Rebbe mean that he will redeem us? Rather, to answer this contradiction, it must be that the real Moshiach Ben David will do a techies hamasim before the final geula, so that all the tzadikim promised to see the geula will, and all the Chasidim will follow their own Rebbe to the geula sheleima - but not that they are in fact THE moshaich.
