[Booker was hoping to come out of that sooner due to his experience with it, to use a moment of distraction to pry the box loose, or at least to distract or -- derail Asura in some way. But it doesn't work like that, first of all, he gets it from the first person perspective, he's getting really familiar with dying in fire as a sensation by now, and it's worse the second time because the visions feel closer to real memories.

What jolts him out of it is the pain of his finger being bit off.

He frankly is a bit stunned at the series of events from set myself on fire to win at something > lost a finger to??]