Different team, different circumstances. You looking at it as far what he did for the Tigers...which much nothing. For the Giants, without him, they don't win the World Series, period. Obviously, the Giants DON'T want him. Because as far as professional baseball is concerned, that IS showing little regards for what he did.
Cannot compare that to the real world.
But, according to people out there, he stunk up the place during the year and they wanted him gone ... but when the WSW came around he played very well ... thats from Giant fan earlier.