I did as it happened right in front of me. Poor guy looked so embarrassed as he laughed it off.
Yeah I edited it to say San Jose as I wanted to be more specific. When I saw that I was like "oh crap!" He could have taken a header. I did something similar years ago and whanged the headstock of my bass.
Was it during What You're Doing? I didn't notice anything on the youtube video I saw.