Story time!
Fr. Gruner was originally a seminarian in an Ontario diocese (I can’t remember which one now, Niagara or Kingston rings a bell). At the end of his studies, for one reason or another his bishop decided not to ordain him, which is within the bishop’s power, ordination is not guaranteed even after graduating from seminary. Anyways, Gruner then went to another diocese (again, Niagara or Kingston possibly) and the bishop there also declined.
Next step, Gruner ended up somehow getting ordained by a bishop in Italy, for a diocese in Italy. Fr. Gruner then skipped town and ended up back in Canada, without the permission of his ordinary (bishop) in Italy or any bishop in Canada.
What about the bishop in Italy? Last I heard, the Vatican ordered Fr. Gruner to go back to his diocese in Italy, but Fr. Gruner has no intention of going back. I believe there was an attempt to get a bishop in Canada to take him, but that has not happened (it will probably happen about never).
To make a long story short, Fr. Gruner is currently not incardinated in any diocese in the world (I heard this from a canon lawyer. Who happened to specialize in ecclesiastical law). That’s a problem, because priests are not actually allowed to not be incardinated. The only time a priest is excardinated (released) is when he’s being immediately incardinated in another diocese. Priests are not suppose to be without an ordinary, which Fr. Gruner currently is. Practically and canonically, this means that Fr. Gruner does not possesses any faculties. He cannot validly (or licitly) hear confessions (except case of emergencies and the like) or witness a marriage or licitly celebrate the Mass. It’s pretty much disobedience piled upon disobedience.