Also when you get a train that you know has a “kicker” hogheads tend to not use airbrakes to control the train speed. If you don’t touch the brakes, the kicker shouldn’t ‘kick’…
So did the original crew know that a kicker was in the train? Or was the first time they went to make a set on the mountain grade? That would still lead to a UDE, but why wouldn’t they tie the dang train down?