I have an idea for this. When you push the button, in a sealed off room; have a cube dropper drop a cube onto a button. The button the cube drops onto will de-activate the deployed panel. Then, when the player hits the exit door button; have a tractor beam pick up the cube from the button that de-activated the panel (In that same sealed off room), and it should re-activate the panel as soon as the cube is carried off the button.