According to Rich Tandler of CSNWashington:
The team’s front office restructured some contracts to take advantage of the fact that there was no limit on spending, despite some warnings by the league that this could result in future penalties. The two biggest moves they made were to restructure the contracts of Albert Haynesworth and DeAngelo Hall so that $21 million and $15 million of charges scheduled to go into future years were charged to 2010.
Those two moves total $36 million, so it is logical to assume that they were the ones that triggered the penalty.
The Cowboys were penalized $10 million in salary cap space, apparently for giving receiver Miles Austin a $17 million salary in 2010 as part of a new contract.
According to a media report, the NFL Players Association agreed to the penalties. The money that is removed from the salary caps of the Redskins and Cowboys will be split among the other 30 NFL teams.
That figure is approximately $1.6 million per team. The Saints and Raiders will not receive the additional space as they were also violators of the uncapped rules, just to a lesser degree.
The Giants are one of the teams that stands to benefit. They need all the cap space they can get their hands on. An extra $1.6 million can make the difference in keeping or signing a valuable veteran.
Read more about how this all went down from our partners at Pro Football Talk