original_query: What was the response of the Orthodox Church to the replacement of the patriarch of Constantinople?
query: What was the Orthodox Church's response to Rome's attempt to replace the Patriarch of Constantinople in the Filioque dispute?
answer: The Orthodox Church denounced the replacement patriarch and excommunicated the Pope who convened the Roman council that orchestrated the replacement.  They also condemned the Pope's attempt to control affairs outside Rome's purview and declared the addition of the Filioque clause to be heresy.