If the slope is gentle enough to comfortably ride sideways on it you could use a straight blade or box plade tilted downwards toward the high side of the hill to cut the trail.
Would need to be very careful doing it that way.
Alternatively, if you can start on a flat spot you can use the FEL to cut the trail.
Seems to me either of those would be faster than a backhoe.
Bill Tolle