Here is the NFL's statement on the salary cap penalties handed to the Redskins and Cowboys:
The Management Council Executive Committee determined that the contract practices of a small number of clubs during the 2010 league year created an unacceptable risk to future competitive balance, particularly in light of the relatively modest salary cap growth projected for the new agreement’s early years. To remedy these effects and preserve competitive balance throughout the league, the parties to the CBA agreed to adjustments to team salary for the 2012 and 2013 seasons. These agreed-upon adjustments were structured in a manner that will not affect the salary cap or player spending on a league-wide basis

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