Cowher returns to coaching, but not really

Former Steelers coach Bill Cowher left the game after the 2006 season.  And he has yet to return. But he was back on the sidelines Saturday.  At Heinz Field. Buried at the bottom of Michael Hiestand’s Monday grab-bag in USA Today is this gem:  “[Cowher] plays the coach of the Gotham City Rogues in an…