The Facts: The Steelers announced today that offensive coordinator Bruce Arians will not return in 2012 because he is retiring. "Bruce Arians has informed me that he will retire from coaching," HC Mike Tomlin said in a statement issued today by the Steelers.

Diehards Line:The Post-Gazette reported two days ago that Arians, 59, who was in the final year of his contract, might not return next season. But it was unclear at the time if he was going to retire or if the Steelers were not going to renew his contract. Arians has been the offensive coordinator since Tomlin became head coach in 2007. He was told last week by Tomlin that he would return in 2012, and Tomlin even indicated as much in a news conference one day after the Steelers' playoff loss in Denver. RBs coach Kirby Wilson was reportedly the man most likely to succeed Arians, but Wilson suffered serious burns in a fire at his home earlier this month and won't be ready to return to work for the foreseeable future.