We had posters who were very very vocal about expressing their opinion that the Patriots were dirty and cheap enough to intentionally give Tommy Kelly's snaps to inferior players with the motive of screwing him out of his incentive money.
Not sure why these these same posters refuse to believe that the Patriots might have helped Wilfork meet his incentives by leaving him in longer during a game when they were pulling other starters out of concern for their post-season health.
Personally, I highly doubt the Patriots put in inferior players just to save themselves a few hundred thousand dollars (or million). Either way, I know they are perfectly capable of doing the opposite, helping a player meet his incentives.