It also completely ignores the possibility of the Vert Stab flexing in the mounts because of impending failure.
Wouldn't this cause differential inputs to the rudder actuators. The pulleys are mounted to the empenage in the fuselage tailcone so they would remain fixed.
If the vert stab were flexing left and right the relative length of the input cables/rods would change. That would cause some pretty wild rudder excursions to my way of thinking.
Just one man's opinion.