You have nothing to lose by asking. To paraphrase the great Chico Escuela, "JetBlue been bery, bery good to me." Email them and give a compelling rationale. In the past when I have gotten points reinstated, it has been contingent on sending them some business, but with JetBlue, they really do seem to "get" customer service, at least in my experience. I just got Hilton to cough up my expired points from about ten months back, and I booked a stay in return, more or less.