dwyer   Jonathan Dwyer won’t be back in the fold this season for the Steelers. The 24 year old running back has signed with the Arizona Cardinals, joining Bruce Arians. Dwyer began to find his niche with the Steelers in the second half of the 2013 season as a short yardage back. Dwyer rushed for 149 yards in 2013.  The coaching staff, though, never trusted him and sources say the Steelers didn’t make much of an attempt to keep Dwyer who was their leading rusher in 2012. The Steelers are thin at running back behind Le’Veon Bell.