MahanThe Steelers are continuing preparations for Sunday’s game at Arizona with practice today on the South Side.  Hines Ward did not participate in practice on Wednesday and remains doubtful on the injury report with a sprained knee.  Center Sean Mahan did not practice either.  Head coach Mike Tomlin expects Mahan to play.  Rookie Tight End Matt Spaeth, who missed the San Francisco game with a thigh bruise, did not practice on Wednesday either.  Cornerback Ricardo Colclough [[ Coke-LEE ]], who has not dressed for a game this year, went through a limited practice due to a back injury.