San Francisco ? Ted Tollner rejoined the San Francisco 49ers as an assistant coach Tuesday in an effort to spark the club’s miserable offense. Tollner, the former USC and San Diego State coach, also is a longtime NFL assistant who served on the 49ers’ coaching staff from 2002-04, with two years as quarterbacks coach and one season as offensive coordinator. He was the Detroit Lions’ offensive coordinator for part of the 2005 season.