They intentionally deceived the pilot group.
The money from the pilot's concessions was supposed to be passed on to UAL. It wasn't, and the Amigos hid that fact from the pilot group for almost 1 year. The only reason we found out about it is because UAL ultimately rejected the contract. When UAL rejected the contract, the Amigos got caught redhanded holding a big fat bag of cash that was supposed to belong to the pilots. And they said, if you want it back, sue us!
Make no mistake about it. If UAL and AWAC would have come to an agreement at that 1 year point instead of splitting, the Amigos would have handed that big bag of cash over to UAL and pocketed the interest for themselves. The pilots would have never found out that the Amigos made money off of the concessions before that money was passed on to UAL.
I don't believe the Amigos set out to defraud the pilot group. I think they got burned by UAL at the outset and then tried to sweep it under the rug never for an instant thinking they would lose the UAL flying. When the did lose the flying, everything came tumbling out into the open for the world to see.