'control system' in this case is not implying remote control, it's referring to the feedback system that adjust the actuators in response to the sensed information. If the motion is controlled automatically, then the control loop can in principle anticipate the motion in a way that it could not if it was remote controlled: i.e. the opposite, it's easier to control the motions (in terms of maintaining balance and avoiding overstressing the actuators) if the operator is not live puppeteering it.