Does he feel slighted by fans and media who have turned against him?
I'm pretty sure there's a difference between turning against an athlete (an art where Shank is a sixth-degree black belt) and recognizing that a player is simply too old to be playing effectively at a major league level.
Shank concludes that Varitek has one more start in him. Varitek is quoted as saying, "... but the fact of the matter is that we need to put our best lineup out there". One of these notions is wrong.