Oklahoma State's football program announced on Sunday Todd Grantham has been dismissed as defensive coordinator.Grantham will be replaced by Clint Bowen, who had been a quality control assistant on the OSU staff.Grantham was in his first season at OSU.Bowen has been a defensive coordinator for 14 seasons in major college football, and was a long-time member of the staff at his alma mater, the University of Kansas.Grantham's firing comes just five days after Mike Gundy was fired as head coach.OSU