@sechel83 I listened to bits of the podcast you mentioned and while I heard Rav Schachter condemn many Chabadskers for worshipping a man, I did not hear him say that it’s OK to believe that Moshiach can come from the dead. Neither did I hear any of those other Rabbonim say such a thing. Regarding the “Kuntrus Shmo Shel Moshiach” you should read those haskomos a little more carefully. Rav Breitowitz and Rav Cohen are giving the most lukewarm approval for the kuntrus, and are both very adamant that Moshiach cannot be a dead man. The haskomos are basically saying that there may be some poskim who hold that it’s not outright kefira to believe so.
I am forced to conclude that your beliefs are biasing your senses into misinterpreting things you hear.