Nothing in that news report would go to indicate that there was joint prayer offered, or that the sectarians who were present, had alternated responses with the Metropolitan. The context implied that they alternate FROM YEAR TO YEAR in giving opening prayers.
I don't see any breaking of Canons there. I think it is kind of weird to call God the Father the Redeemer, or to call God the Father the "Light of the World," when "Redeemer" and "Light of the World" are usually associated theologically with the Second Person of the Holy Trinity. Kind of odd, but no canon-breaking nor overt heresy.