I think that the Steelers should go with 2 RBs in the backfield against the league's 21st ranked rush defense this week...
Skill positions in the base offense would be:
Ben
Redman
Dwyer
Heath
Wallace
Sanders (or Cotchery, depending)
Both guys can run...I've not seen much of Dwyer in pass pro, but Redman is certainly capable...both guys can catch passes out of the backfield as a safety valve...
Just my opinion...