212man.....you saved me from getting confused.....otherwise the SAS light would not illuminate showing it is working (or at least selected) with the Force Trim selected off by the pilot's thumb.
Given the SAS system acutators only have about ten percent authority then it would follow the pilot's death grip on the cyclic would suffice to hold the thing against the action of the actuators as Shawn states.
Actually, the cyclic stick does not move in either mode even when the SAS Beep Trim is actuated.