We have dramatically different definitions of re-tooling. To me, what you are describing a full blown re-build.
Re-Tooling would have been trading one of the big three pitchers and backfilling with your cheaper top prospects, replacing Barnhart with a cheaper option and reallocating those funds to find a platoon partner for Naquin (the combo would have been cheaper and 90% of Castellanos) and/or Winker or another OF to slide Winker to DH.