“The Orthodox don’t believe the Pope holds such jurisdiction (right?), so why would he not say that they look for the Church give up the claim rather than the actual power?”
Why quibble? Its a problem whether its merely a claim or a reality...and its a total deal breaker.
“Further, isn’t that power - regardless of its existence - a spiritual one? It would seem an odd usage of “temporal” if that is what he meant.”
Seems to me that its the Pope who appoints bishops, from the highest Cardinal right down to the lowliest coadjutor and he can remove them (or any cleric) for any or no reason or because its an ill fated Tuesday. Given the nature of episcopal jurisdiction, to us that’s temporal. For example, the Patriarch of Moscow has no jurisdiction in the Church of, say, Serbia; neither the does the Pope of Rome and we prefer to keep it that way.