Nope, that tumble wasn't rehearsed; it was a good, old-fashioned fall. "Literally, as it happened my foot got caught in the stair," Lambert told MTV News. "I hit the platform, and I didn't know what was going on. ... I felt like when you spray a cockroach, and its legs are up in the air. That's what I felt I looked like."
Perhaps he had felt inspired by Jennifer Lopez's fall earlier in the evening. Though fans may have thought his somersault was planned, at the time he felt a bit foolish. "And I'm like, 'I bet I look so ridiculously crazy,' " he recalled. "And when I went back and watched it, I was like, 'Oh, ninja roll, cool! That worked out.' "
And contrary to appearances, Lambert said he has no experience whatsoever in the ninja arts. "No ninja roll experience," he joked. "I don't know where that came from. I'm lucky I didn't roll off the stage. I don't know how that happened. It was amazing.
"I just can't believe that I was up by the next lyric," he marveled. "That was crazy."