Is there a term that exists implying contradictory aspects of both control and being controlled? A term expressing a simultaneous dichotomy along the lines of:
One might perhaps use this term of a drug user, who both controls the substance entering the body, but ends up controlled by the substance, or a situation where a person in authority over another person ends up under the authority of that second person (depending on context). So some examples might be:
The man was a ____ to methamphetamine.
The man was her ____, her political leader, led politically himself just as often by her words of wisdom.
But does such a single term exist to describe this relationship?