Run On Landing
That's an emergency maneuver for loss of tail rotor. Those pedals on the floor do different things in helicopters. They control that little anti torque sideways rotor in the back.
If the helicopter has enough forward speed in cruise, and the power remains static, the pedals are neutral. Add or decrease power, those pedals become necessary.
A run on landing scrapes lots of metal off the skids. The point is to land fast enough to keep the helicopter level and facing forward. If it turns sideways and falls over , those big ol' whirling blades tend to do a lot of damage.
____________
Seriously, why couldn't the 70% N1 engine be shut down just before touchdown, or, perhaps, a little sooner? Was the other engine which was slightly below zero thrust not producing enough power for flaps, brakes, and other necessary or desirable items?