It went like this:
1. SLI negotiations weren't going much of anywhere, so SWA management started making some vague threats that maybe operations wouldn't be integrated if a consensual deal wasn't reached. The Merger Committee decided in light of the threats that it might be better to reach the best deal they could and bring it back to the MEC for their consideration. The deal was horrendous. A third of the pilot group stapled, average loss of seniority of about 25%, peak loss of about 34%, no one allowed to upgrade until the last SWA FO had upgraded, etc. It was the worst seniority integration in major airline history.
2. The MEC looked at the deal, and it was absolutely awful. But it was the best that the MC could get without arbitration, because SWAPA wasn't budging. We had a Process Agreement and the law on our side for arbitration, so the MEC voted down the deal and told the MC to continue to mediation and arbitration.
3. The MC went out to Dallas for one last meeting before mediation, and SWA management said that they had "500 people working on 'Plan B'", and Plan B involved not integrating operations and slowly whittling AirTran down to nothing as they stole our assets. Of course, this was blatantly illegal under McCaskill-Bond and in direct violation of the Process Agreement that they signed, but the general insinuation was "we don't care, take us to court, you'll all be bankrupt and living in the streets by the time you get a judge to hand you anything." In the meantime, the CEO had sent out a letter to the entire pilot group hinting at the same threats, but not in as strong of language as was being used behind closed doors. Still, the pilots started to panic.
4. Under these threats, the MC tried to negotiate a new deal, but SWA management said "no negotiations, you take this cram-down or we initiate 'Plan B.'" So they brought back the cram-down "deal." It was even worse than the first deal, with all captains now losing their seats and no pay raises until 2015.
5. The MEC sent it out for a vote, because the pilots were panicking at this point after the CEO's letter and rumors of stronger threats were leaking out. The Merger Committee told the pilots "vote yes if you want a job at SWA, vote no if you don't." Under those circumstances, with a pilot group almost all in their 40s or older with families to think about, it ratified by about 85%.
If you call that "consensual," then I beg to differ.