He actually sounds like he's a step away from Sedeprivationism in terms of how he articulates it. Interestingly, at one point he quotes directly from a paper I wrote in 1995 that was printed in The Angelus, a paper that I wrote for a friend and that I never intended for publication, nor did they ask my permission before publishing it and making edits to it. They even spelled my name wrong, since I hadn't written my name on it as it was just sent to a friend as if it were a long e-mail or what would today be like a post on CI. In any case, the paper wasn't anti-SV as much as it was pointing out some problems with SVism, that eventually led to my taking a more Sedeprivationist view. They kept my original title, "Pope-Sifting: Difficulties with Sedevacantism". It was not meant as an endorsement of R&R. Basically, the bottom line is what principle there is to prevent someone like Father Cekada's famous "Aunt Helen" from waking up one morning and deciding that the Pope is a heretic an therefore a non-pope. There's nothing in the straight SV position to preclude that. At some point the authority of the Church does have to figure in, I just couldn't put my finger on exactly how, until I became acquainted with the material-formal distinction, and SPism.
Father Cekada, in his response to it, said that my "article" was written in response to his pamphlet. Only indirectly. I had not so much as read his pamphlet and it wasn't addressing anything in its contents.
Here's how it went. I had just left then-Father Sanborn's seminary and started attending Fr. Ringrose's chapel in Washington, DC (Fr. Ringrose now also more SV/SP).
Friend: "I read this pamphlet by Father Cekada. Since you used to be a sedevacantist, can you give me your reasons for why you backed away from it?"
I: "Sure. When I have a minute, I'll write it up for you."
I: Spent a couple hours writing this out and send a copy to my friend.
TWO MONTHS LATER.
Friend #2: "Congratulations on your article."
I: "What article?"
Friend #2: "The one in the current issue of The Angelus."
I: "What?"
Then I go to pick up a copy and read it, seeing my name mis-spelled, numerous edits made without my approval, some English translations inserted (some of which were wrong and for which Fr. Cekada attacked me), etc.
Father Cekada issued a rebuttal since this article was said to have been written in response to his pamphlet. It wasn't, except indirectly since my friend's reading of it is what prompted him to ask me to write my own perspective. I didn't every bother with any kind of refutation, since I wasn't interested in getting into that arena. Never was.