Interaction of Running Script and Closed Loop mode

I downloaded to controller and was able to replicate the Progressive Regen Script. Once I input the correct values (no-load RPM at 50%), it works as described.

The above takes place in Open Loop mode. When I change the mode in cofig to Torque Mode while running the script (or resuming it after the Torque Mode is selected), the controller behaves in as follows: it accepts the command and the motor starts running, but i get a "runaway" and the Run tab shows Motor Command stuck at 1000 even after I bring the throttle all the way down.

What is going on here? How do the Torque Mode and the regen script interact, what is the order of priorities, etc.?