The stunt went wrong when he failed to pick the lock and was seen kicking his legs before passing out and being dropped, unconscious, into cardboard boxes at which point the show went to intermission. Producers later explained that the stunt had pre-arranged safety measures, meaning Goodwin's life was never in danger.
The stunt backfired when he couldn't pick the lock, resulting in him kicking his legs before passing out and being dropped into cardboard boxes. The show then went to a break as a result. Producers later clarified that the stunt had safety measures in place, ensuring Goodwin's life wasn't at risk.