On the given image the person-operator operating by a Russian anthropomorphous robot avatar called "FEDOR", is dressed in full exoskeleton (the legs of the person-operator are put in operating trousers). I.e., possibly, robot-avatars FEDOR will repeat to some extent not only movement of hands of the person-operator, but also movement of legs.

By virtue of these circumstances the manufacturers of robot FEDOR should use the support mechanism - differently they will not manage to localize in space of the person-operator - at walking the robot the person-operator will be compelled to repeat a trajectory of the pedestrian walk of the robot. Thus if the robot avatar will operate from any small lodgement (from the protected bunker) then without the support mechanism the person-operator sooner or later will collide with a wall of bunker. - This question was discussed on a Web site: http://streltsovaleks.narod.ru

There are also and other reasons explaining why at remote control in the copying mode by the robot-avatar the support mechanism is necessary. But I here already not want to argue any more about this theme - to me already simple laziness to do it.