Yes. A Synod, comprised of at least, to my knowledge, the Patriarchs of the Ancient Churches of the East (i.e. Constantinople, Alexandria, and Antioch-due to illness or something unrelated, I believe the Patriarch of Jerusalem was absent, but later sent his consent), "anathematized" the Pope and all his followers, in response to the Bull of Excommunication placed on the Holy Table of the Cathedral of the Holy Wisdom in Constantinople by the Pope's legate, Cardinal Humbard. The Church thought this "division" would be short lived and resolved at that time, in 1064. However, the Crusades sack of Constantinople in 1204 solidified the division.
My only point is that our Church has not condemned them as heretics. Due to what you ask, "earlychurch," I would guess, we're separated from them; a distinct denomination. Since 1965, the Ecumenical Patriarchate coordinates a "dialogue of love" (which really wasn't initiated until sometime in the 1980's), but as Patriarch Bartholomew said in 1997, here in the U.S., in addition to the well known theological disputes betwen the two Churches, we've been separated for over 1,000 years and our traditions have continued to grow, independently. It seems, therefore, we're separated, distinct, yet, through dialogue, attempting to focus on areas of continuing dispute in an effort to resolve them and also focusing on defining matters in which we share common belief, but we are separated Churches.