What action is prohibited once the lead skaters are back-to-back with the axis in a whip intersection?

In the context of a whip intersection in synchronized skating, the action that is prohibited once the lead skaters are back-to-back with the axis is pulling-up. This is particularly important because pulling-up can disrupt the flow and formation integrity of the team, especially during intricate transitions like intersections.

When skaters are engaged in a whip intersection, they rely on maintaining a specific formation and momentum to execute the elements smoothly. Pulling-up affects the synchronization and positioning of the skaters involved, potentially leading to collisions or breaks in the formation, which could result in deductions in scoring.

Maintaining proper movements and ensuring that all skaters adhere to the allowed actions is crucial in preserving the performance quality and safety during such maneuvers.