Why do you want to take them off??? Anyways you have to remove the interior trim, and then you stick your hand through this hole behind the trim, and it's fairly easy to remove them from there.
Its pretty stupid really..I work at a grocery store and someone hit it with a cart I guess. I'm always parking it out in the back 40 though. Like my other post says I'm going to paint the car and I wanted to replace this part.