Bring Down Those Shields

Look at the button on the side of the controller here. I bet if you got close enough to one of those scourging crystals, you could use the controller to bring its shield down. Then it would simply be a matter of destroying the thing before its shield goes back up.$B$BBrave enough to hazard another trip down there, $N? I can guarantee a nice reward for you if you can bring down those shields and destroy the crystals.$B$BHow can you refuse if it means less Scourge, especially ones made from murlocs?