They're waiting on a TA and have been for a long time. Pilots are frustrated, company is relying on open time to keep the planes rolling, and in the pilots' eyes, they have deliberately run understaffed to save a few scheckels, it's now biting them, and boo hoo too bad. On the standard list of stupid pilot tricks, guys have been telling scheduling that they'd love to pick up open time but they're afraid they'll be Jimmy Hoffa'd, people have been posting on internet forums that they're through picking up open time and you should be too, etc etc. Unsurprisingly, then, the company has filed for an injunction to bring things back to "status quo" (for all values of "status quo" which equal pilots working a ludicrous amount). Basically, it's US Union negotiating in the 21st century episode ten, same as one through nine...aka he'll have a fair trial right before we shoot him.
At least that's how it looks from the cheap seats.