I do not work for FedEx, not that I would not like to, but I am a little confused here. What I remember from contracts class; just because the union thinks you should get a vote on the TA does not mean that they "approve" of it. It usually means that it might be a reasonable offer and the masses deserve a look at it. It does not necessarily mean that they (the union) think it is the best you could get, just an offer that is worthy of consideration. That is, if they did not wholeheartedly endorse it in the process. Again, this is just an outsiders opinion, take it FWIW (which ain't much.)
Anyway, Fly Safely!!
Moondog