how can the offense NOT take a step back?

Come on bro! Spiller isn't even close to the mismatch nightmare Jimmy Graham is. You lost me with that comment. Spiller is an explosive cat, but he hasn't been used in the Bush/Sproles role before (really). To say he's "every bit" the mismatch Graham is sounds just plain ignant.

Or, you know, that's been his career. Spiller only averages like a catch and a half per game less than Bush or Sproles, in far worse offenses. Spiller and Bush both have way more rushes per game than Sproles though.