How could the Redskins pull this off?

According to askthecommish.com, the Redskins project to be 20.72 million dollars OVER the cap...yet I find this on nfl.com. How in the he!! could this happen?

But it just baffles me how they are able to spend and somehow end up under the cap year-in and year-out.
Perhaps like the 49'ers of the early 90's with $ being paid under the table to circumvent the cap.:dunno: