The riddle thread.

A Volunteer man named jerry decided to get tested for human's ability to figure out a challenge. He was given 6 hours to complete the test. He walked into the room, its dark, and wet. The walls are blocked cement. NO windows. There is a little ceiling lamp, and a big gigantic Vault door blocking the room off. The room is about 6 feet in height. So Jerry Trys pushing the door open, but it didnt work. So Jerry sat for an hour to figure out the best solution. He Pulled down a metal brace from the lamp, and started whacking the wall near the door. He started to chip it out. His hands were already bloody. He kept going, till he hit wire. His arms felt like jello, and the brace broke. He sat in the darkness until time ran out.

Jerry asked the head of this expirement if he was right about how he tried to get out. The man said "No, and yes."

How could have Jerry gotten out?