I think it is entirely within what little authority I have as a mere Subdeacon of the Holy Orthodox Catholic and Apostolic Church, privileged to serve the Patriarchate of Antioch (where the disciples were first called 'Christians), to report faithfully the position of the Holy Fathers of the Third Ecumenical Council, thereby speaking on behalf of the Church. I have no doubt my bishop, metropolitan and patriarch would all issue the same exhorations against FK's ill-chosen statement of Christology if they were participating on this thread.
So do you declare everyone outside of your faith a heretic?