ARCADIA, Calif. - During a practice session last Tuesday in Aspen, Australian superpipe snowboarder Torah Bright fell while attempting a Switch Backside 720, banged her head and suffered a concussion. Two days later, back in the pipe, Bright went down again, this time trying a Crippler 540. She was briefly hospitalized with what was suspected to be another concussion, then released, but withdrew from this weekend's Winter X Games.