Locke looks up at the timer, and the last hieroglyph flips into place. "System failure!" announces the loudspeaker, over and over again, as everything begins shaking and rattling. Charlie's still preoccupied trying to help Eko, and the metallic objects are starting to their little dances of attraction. Eko finally comes to, and none too soon, as several of the metallic objects, like knives and darts, could do non-metallic things, like people, severe damage as they fly down the hall towards the magnetic wall. Charlie helps Eko walk, which is quite a sight, and they barely avoid getting hit by a heavy garbage bin. Dumbbells are rolling, and stationary bikes and fire extinguishers are flying through the air. Eko pushes Charlie away so he can run back to the computer room, which Charlie doesn't seem to think is such a good idea, but then Charlie gets distracted by the washer and dryer, which are trundling down the hallway towards him.
Eko's staggered back to the computer room, where a disoriented Locke is standing amidst the general non-chaos of the computer room. But now things are starting to happen here -- the metallic timer box crunches in on itself. "I was wrong," says Locke. "Looks like I owe you a Coke." He and Eko stare at each other. There will be plenty of time for mea culpas later, so if I may offer a suggestion, boys: MOVE YOUR ASSES.
Below them, Desmond's made it to the failsafe. He lifts the lid, which flies away. He stares at the keyhole, and makes the sign of the cross before inserting the key, which I guess isn't made of metal. We see a couple of quick cuts to Penelope and her dramatic tear-stained cheek, as we hear her voice repeat the most salient part of her contribution to Desmond's defining object: "All we really need to survive is one person who truly loves us. And you have her. I will wait for you. Always. I love you." Desmond says, "I love you, Penny," and he turns the key.