I am an advocate of following the rules of a program that you’ve agreed to, and I counsel against selling points and miles because the risks involved generally aren’t worth it (cancelled tickets, shut down accounts, ban from the airline).
In the case of a carrier that shut down its transatlantic operation, that a customer doesn’t intend to fly again, I’m not so sure that taking a haircut on the value of these points to get something out of them isn’t the worst strategy. What do you think?