SEN and rob moore aren't virtuous by any means and I have also been disappointed with this org's decisions in the past but this pancada move wasn't one of them. He has NOT been removed currently and is still getting paid. The announcement was only that he has no buyout and can leave if he wants to before his contract is over or leave when the contract is over. Is this not the best possible realistic scenario for him? Sure they could have told him before announcing it but this would still be the likely and best possible scenario for him, it doesn't change anything.
TL;DR: SEN could have told him before this announcement but it wouldn't change anything, he can leave to join another team now or leave when the contract is over = best realistic scenario atm.