In this instance, the RAT was left extended until RTB, where it was restowed with a new squib.
Correct and the while the L-1011 RAT is not a "life limited part" the squib that allows for RAT extenstion has a "life limit" of 12 years.
The RAT cannot be retracted on the L1011?
The L-1011 RAT must be stowed manually, on the ground.