Let's see if I get this right:
Mendenhall fumbles, replaced by Redman
Redman fumbles replaced by Dwyer
Dwyer fumbles replaced by Chris Rainey
Rainey fumbles replaced by Johnson
Then... Sanders fumbles
Then.. Mendy fumbles replaced Will Johnson.
So Tomlin decides to go with Rainey for the majority of the 2nd half.
Toss in 3 Charlie Batch interceptions and viola, welcome to your Steelers offense.