Got to be honest; this is driving me crazy. I first thought Doc McGhee, because he managed (at one time or another) half that video. I don't think it's him. Then I thought, Paul Rodgers, but nixed that idea. Not anyone else from Idol's band. Not anyone from Alice Cooper's band, as far as I can tell.
But I think he's more than an 'extra'. I could swear that I've seen him before.