The Ecumenical Council's Dogmatic Statements

Every ecumenical council, when they discuss canons relating to bishops and jurisdictions in Rome, there's never any statement of universality in the universal. The ancient canons equate the jurisdiction of Rome to other jurisdictions. How could the Vatican one be view be correct if an ecumenicalCouncil can excavate and condemn a pope? I mean, that means that the papacy is not indefectable because Honorius defected.