Not exactly. The claim never applied to 190 FO's as the suit was based of their pay. Of roughly 1400 eligible pilots almost 1000 signed on. Those that did not were mostly pro-management types.
As far as sticking together there isn't much 3A pilots can do. The company lost, made it clear to the arbitrator they would not make the remaining pilots whole. This pilot group has been divided long before 3A. I suppose we will all see what the airlines response is in the coming weeks.