Clutches generally wear out because drivers (a) sit at stop signs and traffic lights with the transmission in gear and their foot on the clutch (wears out the throw-out bearing); (b) release the clutch way too slowly while revving the engine up on takeoff from rest; (c) drive with left foot resting atop the clutch pedal, resulting in continuous slippage.
With the engine shut off and the transmission in neutral, no part of the clutch assembly should be rotating while towing. I, too, doubt very much than any distance towing was the cause of the problem.