Revealing mistake: During the "grand finale" fight scene, which takes place on the underside of an overturned helicopter hanging from a cliff, a few frames show the rigging that is holding the helicopter in place.
Revealing mistake: When every bullet hits the snow it sparks, showing the pyrotechnics of the shots.
Revealing mistake: The explosion happens and Gabe and Jessie seek shelter in a small cave. Before the rocks start falling, Gabe bumps the wall of the cave and creates a hole in the set. This is noticeable on the left side of the screen.
Answer: There was no realistic reason. First, the steel buckle on the safety harness would never just bend and break like that. The accident was not Gabe's fault, but Hal is supposedly so angry and grief-stricken that he unfairly claims Gabe ignored his advice when rescuing her. The movie uses melodramatic plotting to contrive a conflict between the two men. It's also unrealistic that Sarah, an inexperienced climber, was able to make such a difficult climb, even with Hal's help. The movie had many plot holes.
raywest ★