The East had to function on their own most of the time, and with the emperor in Constantinople, of course Constantinople had a sort of practical pre-eminence. When over time most every canon not accepted by Rome was in use in the East anyway and eventually got the recognition of Rome (Such as Constantinople being 2nd in rank above Alexandria & Antioch for example). Then when St Photius held what was intended to be the “8th Ecumenical Council” with the intention of granting Constantinople equal prerogatives as was held by Rome, even though Pope John VIII rejected this council I’m sure many thought in time Rome would come around to recognizing it. (Pope John VIII stated reason for rejecting it was because Constantinople had too bad of a history of heresy to take to chance on granting her that much authority). But then when St Photius mistakenly thought that Rome was in heresy because of the filioque (unfortunatly Brother [user]mardukm[/user] and CAF wasn’t there to clear up this matter

]) … At some point the East did think that it either had the authority to excommunicate the Pope, or at least they thought that if they are sure that they are right, that their excommunication would later be validated by the next Pope, or some future Pope (as was almost the case with regard to Pope Honorius I, or at least many thought that it was so).
The East rarely tries to understand “how” something is possible anyway. For example, they don’t say they know how the Bread & Wine become the Body & Blood of Christ, they just confess that it “does”. So likewise, if they think there is heresy in Rome, they do not try to understand “how” this can be possible, they only feel the obligation to wall themselves off from any bishop (even Rome) if they perceive that there is heresy there. I’m sure that at first many thought that another Pope would come after that would validate all that they had done. Now after such a long time without any validation from Rome and a better knowledge of what actually happened available, the East is slowly coming around to realizing that they were in error about Rome being in heresy, and with this realization reunion is coming closer (I believe reunion will begin with Russia).
So it was never so much that anyone really thought that they had the authority to cut off the Pope, but more so it was that if they thought anyone was in heresy that is was their obligation to wall themselves off.
I think reunion is near, and with it will come a new age of enlightenment that we have not seen since the glory days of Alexandria! If anyone wished that they lived is some prior time when something was grand, just stick around here a little longer and you will one day be glad you lived in this age!
