I gotta agree with DE on this one. I might have chosen a different word for the analogy, hell I might even have just used the n-word euphemism, but there's no need to jump on Possessed that way.
I do however disagree with Ender's further defense of the word. One relationship where you had (as I once, myself, heard it described to me in high school) "n-word permission" does not universally devalue a word or take away the connotation.