Blinking Corpses

On the level "Sacred Icon", sometimes on Heroic mode, where you fight an Enforcer, there will be a body of a Brute close to the plug locks. When you deactivate the containment sheild and the platform you are on begins to move, look at the Brutes eyes. THEY BLINK. Either they're zombie Brutes or they're faking! Someone please try and attempt this, because I'm not too sure if it'll work the second time around.