Yup, pobably staged but still cracked me up enough I wanted to share. The cigarette is a nice touch...
I'm betting he had a SEG just before the foot slipped off, the grimace is in it's infancy stage as he realizes he is about to put the cigarette out with his face and the pavement. He is also singing a few octaves higher. If he had his inner elbow up (right side isn't too shabby, but he has a death grip, so major fail on style points) and in a relaxed position he may have pulled it off.
Makes me want to go out and give this a shot
ATGATT FWIW.