Vikings DE Brian Robison was forced from Sunday's game against the Rams with a shoulder injury, and will not return. Robison went down early in the first quarter, and was formally ruled out at halftime. Everson Griffen has seen an uptick in snaps in Robison's absence, and responded with a pick-six of Sam Bradford. Robison was immediately shuttled to the locker room upon going down, so it's possible he's suffered a season-ending injury.