Doh! He was an Orthodox. So, being a member of the wrong church, couldn't be saved.
"...so important is the unity of this ecclesiastical body that only those remaining within this unity can profit by the sacraments of the Church unto salvation, and they alone can receive an eternal recompense for their fasts, their almsgivings, their other works of Christian piety and the duties of a Christian soldier. No one, let his almsgiving be as great as it may, no one, even if he pour out his blood for the Name of Christ, can be saved, unless he remain within the bosom and the unity of the Catholic Church." (Pope Eugene IV, the Bull Cantate Domino, 1441.)
They really hate that.