During training for elite cycling competitions, I believe cyclists are conditioned to take on and overcome various scenarios like, losing a lead in the last stretch, catching up to the lead pack, etc. In this case, I can only imagine that recovery after a crush is part of the conditioning. Several variants may be employed to simulate a crush in a competition, and the athletes are trained on how to approach such situations.
I would credit psychological preparedness, physical fitness and the self confidence to be able to overcome the losses incurred during a crush as the ways in which cyclists are able to overcome the fear of crushing.
Through this form of preparedness, crushing becomes just another scenario.