The hit came during overtime of the Titans' 19-16 overtime loss and resulted in a costly 15-yard penalty.
"I'll admit, when you look at it on tape, the crown of my helmet hit (the) bottom of his chin," Witherspoon said, according to the newspaper. "But not $40,000 worth. I was like, are you kidding me?
"Not when guys are body-slamming quarterbacks to the ground and getting $25,000. Last weekend (Oakland's) Richard Seymour slammed (Pittsburgh Steelers quarterback Ben) Roethlisberger to the ground, and he got $25,000. Vince (Young) gets slammed to the ground earlier this year by Pittsburgh, and that was $5,000. And mine is $40,000? That is what is disturbing. I can understand the fine, but there is no understanding to me the amount."