Probably due to the fact that not as many are bailing to go back to the airlines. I think they planned heavily on a lot of pilots being recalled, or just leaving to go to the airlines, but the airlines have been recalling slower then what they anticipated.
I really hope they don't furlough. This company has a pretty good history when it comes to not furloughing. I would be shocked if management slipped this badly, and have to furlough due to over hiring.