I didn't have problems moving it. Only when it got snow under that part of the binding the cable would move out. All they need to do it have a cap that would screw in and hold the cable in place since once you have the binding on the ski you don't want that part to move. Since movement means the binding will not hold you in. I also believe that it happens because of the way the cable bends up when your boot is not in the binding.
And I would think about buying the binding again IF the cable is locked in place once the binding is installed.. If not I just would not trust it.