The toe piece is on some rails and the springs are between the toe and heel piece pushing toe piece forward. The cable is mounted to the ski at the heel piece, goes forward and around a pulley at the toe piece back to the heel of the boot < .That cable is a at a (adjustable) fixed length and not connected to the springs. The tension in the system comes from the springs pushing toe piece forward. One raise the heel and compess the springs and binding moves back.
lol duno if it would work. Probably not. Would be too complex with the rails and ice and stuff, and heavy.