Doesn't work stevey - Mop it up was one of the two that would have been voted out in a tie - which has already been established to not be a townie.
Granted, there are other possibilities (hoping to use the bring-someone-back-to-life ring, we're in opposite mafias and it was pure dumb luck, I'm the serial killer, etc...) but, in this specific case, your thought process doesn't work...