There have been a few recalls (2, I think?). The pilot recalls have had substantial deferring numbers, because the guys have moved on and gone on to other positions they're not ready to leave and face the possibility of another furlough from AA. A friend of Bill's from his TWA new-hire class (TWA hire-date Feb '97) is still awaiting any recall. He recently started a contract flying job overseas, and if offered recall right now would defer to finish the contract, but he IS going to accept recall at some point. So just because there's a high deferring rate with the recalls, doesn't mean these guys aren't going to come back at all, they're just deferring.
On the F/A side of the AA recalls, there is no opportunity for deferring. You take your [one] recall when offered or you are gone. Period. The F/A recalls have had 75%+ acceptance rates.