Steelers OL coach flagged for sideline shove

Steelers Offensive Line Coach Mike Munchak was flagged for unsportsmanlike conduct in the first quarter Saturday night after he grabbed and apparently shoved Bengals safety Reggie Nelson. Nelson had chased a play to the sideline and run into Munchak several yards off the sideline. Though it appeared that Nelson shoved Munchak, too, only one penalty…