Sean,
To hold an office IS necessarily to hold jurisdiction. That's where the jurisdiction comes from, it's attached to the office.
Those who do not possess an office do not have jurisdiction. That does not mean it cannot be delegated to them or supplied to them, but for lack of delegation they do not have it, and the supplication of it only extends to certain acts, and only for the duration of those acts in order to ensure validity.
But sedeprivationism is not concerned with priests, rather bishops. Introducing priests into the mix unnecessarily confuses the issue. The entire point of sedeprivationism is to combat the difficulties presented by the crisis viz. authority (or lack thereof) and succession. It is concerned with assigning some theoretically authoritative character to the bishops and popes of the Novus Ordo Church.
You have to explain it to him because he is in over his head and does not have the humility to admit it.
Sedeprivationism is a novelty and is certainly a doctrinal error at a minimum.
Yes, please explain to me how a parish priest could be constrained from hearing confessions 8 there 8 no distinction between the power of order and the exercise is of jurisdiction.
I'm not sure what the 8's (maybe they're supposed to be asterisks around "there"?) in your post mean, but your question is tangential and distracting. You claimed agreement with the sedeprivationist theory that an office can be held without possessing the jurisdiction attached to it. To prove this, you seem to be relying on instances where jurisdictional acts are performed validly by someone who does not have an office. It is granted that one who does not have an office may have jurisdiction
delegated to him for a period (by the law or a superior) or have jurisdiction
supplied to him to ensure the validity of a given act.
However, it is a non-sequitur to then conclude that one who possesses an office may somehow not posses the jurisdiction attached to it. Think about it. It's precisely because someone
doesn't have an office that they must have jurisdiction delegated or supplied to them for the validity of jurisdictional acts.