My understanding on the UP-Amtrak negotiations is that things were running smoothly, there was an effective deal in place...and then someone at Amtrak got too clever by half at the end of the process, UP got furious, and we saw the after-effects of it. Even allowing for some misbehavior on both sides, my understanding is that Amtrak at least was not blameless in the failure of the negotiations.
As to equipment, IIRC the extra equipment in the plan came from ditching the sleeper east of SAS. That freed up enough sleepers to balance things out, while coaches are at least a slightly less desperate situation. I think the sets freed up in the schedule adjustment were also supposed to help there. As noted, you can throw a lot of equipment into the western LD trains (or indeed the eastern ones) and watch as demand rises to meet the new supply.
As to equipment, IIRC the extra equipment in the plan came from ditching the sleeper east of SAS. That freed up enough sleepers to balance things out, while coaches are at least a slightly less desperate situation. I think the sets freed up in the schedule adjustment were also supposed to help there. As noted, you can throw a lot of equipment into the western LD trains (or indeed the eastern ones) and watch as demand rises to meet the new supply.