You said "...very dangerous situation for Alcor members. Should the courts decide at any time in the future that Alcor existed for 24 plus years without a lawful Board (and thus also with unlawfully appointed management) courts might conclude that it is no longer possible to remedy the situation and that he only solution shall be to terminate and liquidate Alcor as a business entity. The proper disposal of all those cryopreserved patients will consume all of Alcor assets and Alcor will enter the history as just another liquidated cryo provider."
As to the first item you address, it could happen, but in my view it would be very unlikely. It would have partly to do with how hostile the people were who were bringing the lawsuit. Assuming it would be Alcor members and others of goodwill, I'd guess that a guardian/attorney would be appointed representing Alcor members as a whole, and that legitimate elections would be held to appoint a new board, who would then be tasked with reviewing past decisions.
As to the second item, I have to wonder about your commitment to cryonics (if any) when you speak of "proper disposal of all these cryopreserved patients" by any other means than continued storage at liquid nitrogen temperatures. Thawing them out is not a given if a cryonics organization goes under for whatever reason. Two major organizations offer storage, and another or others could be started up if necessary, so there is already actual and potential redundancy in the cryonics world for storage.
Having said that, I will footnote here that it might not be a bad idea if Alcor's patients were forced into a cooler climate, anyway