I think the same thing has just happened to us and I'm afraid to call and hear it.
Our morning flight is off the schedule for our date, and every day within a week both days--like it doesn't exist.
Our options on other airlines are bad, very bad at this point. 2-3x what we paid for these tix. And to think if I'd just waited to book with JetBlue their rates were the same when first released (now they've gone way up). My parents are gonna kill me.