I do believe that under ALPA the Polar leadership at the time walked away from a (very good) deal for their FE's worth significantly more money (double the current).
Sadly, the last "best" offer from the company is 6 months (I think, perhaps, maybe) that was increased from the 2nd offer of only 3 months which was tendered to Polar under the watch of ALPA. Then, after they walked away from the first offer IBT was able to double it, Since IBT was not in a position to represent Polar at the time of the first deal and a DFR against ALPA is beyond the time limit they are SOL in respect to any DFR.
The Previous leadership under ALPA shot the FE's in back, if a DFR is filed (it won't) then much of that will come to light and a few Polar guys had better be running for the hills.