Blake.Pno he wasnt...
He was the guy in the teaser who said ''film the skier, not the idiot''. (Not the official trailer though)
And to OP, yes he actually had one cameo shot in the urban segment. His name was not displayed, but the same shot is in his self edit from 2010.
@ 3:08 he hits a closeout rail while Mike Henitiuk wallrides at the same time. It's in the movie, so you win.
I will eat you.