Well, it appears clear that your reps don't want or are not willing to do anything about it. Off the top of my head, here are a few options:

1) Recall your reps and put reps in that will do something about it. (Easier said than done.)

2) Get ALPA National to fire their current lawyers and replace them with competent ones. (Yeah, right.)

3) Get resolutions passed in most or all of the LEC's directing the MEC to pursue this legally. (Can you say, "received", or "we'll look into that and get back to you?")

4) Replace ALPA with different representation that is not afraid to argue matters of principle and will direct their attorneys to pursue this and will not accept failures with ineffective contract language. (Again, easier said than done.)