A jammed pedal in the hover is to be treated as a serious malfunction. You won't know its jammed until you commence a yaw input. If you turn in the direction of the rotors the a/c will descend. If you turn in the opposite direction to the rotors, the helo will climb.
In both instances you must LAND.
Easy in the direction of the rotor as the helo is descending.
If it climbs, roll the throttle(s) off slowly, or bring the engine lever back to GI.
EITHER WAY, DO NOT UNDER ANY CIRCUMSTANCES CLIMB OR FLY AWAY FROM THE HOVER. You will enter a whole new area of uncontrolled test flying probably ending in a violent and painful crash.
You dont know why it jammed why would you want to go flying with it then????????????????