I think that this year is the year that will make or break this argument (that the Pats are cheap) for evah.
Assuming that the NFL and the NFLPA does not come to a new labor (or labour for our British cousins) agreement before the March 5th deadline. Then the Pats are looking at an uncapped year, where they can go out and basically buy all the talent they want. Of course you have to think that someday the cap will be back, so you can't go nuts.
Also you have to consider that most, if not all of the teams that the Pats will be chasing next year are serverly limited in their abilities to sign free agents via the "final 8" provisions of the uncapped year in the CBA. It takes the free spending Cowboys, Jets out of any Free Agent's negotiations (Colts, Saints, Chargers, Vikings, Ravens, & Arizona round out the "Final 8". So if your the Pats and the JEts, Chargers, Ravens, and Colts are all hampered by this rule, I would go out and sign a few Free Agents because a) they can and b) the price might be lower than you thinks this off-season with these restrictions.
Now if the Pats do this, and re-signs Vince and extends Brady, then the cheap talk goes out the window. If they sign no one, and make Vince, Mankins, and the Ghost all play at the tender amounts, then the "cheap" label will affix itself permanently to Kraft's forehead.