no, but the greeks needed a pretext, as the latins got ahead in the race by crowning the barbarian frankish king and forging inheritance documents, which was particularly unfair to them since it was the greeks who started all this christianity thing. then they almost got entirely wiped out of existance by arab hordes. also, they were never really unified. the single church pre-schism was already very different depending whether the local bishops spoke latin or greek. there were two churches from the start, and the catholics are the only ones who acknowledge this. they call the non-schismatic greeks "eastern catholics". the orthodox call the latins "heretics", even though they somehow claim the latins were part of the church before the schism. there are many more little theological differences, btw. no practical ones, though.
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