Lefebvre did not possess the canonical authority to ordain Fellay in the first place. Ergo, Fellay, (unlike one of his fellow bishops), must first obtain dispensation from the pope, (since he’s now engaged in schism), contrary to section 2 of the canon laws regarding ordination. An impediment which was not formerly present.
Again, it’s up to Fellay. He can choose to go on his own, but he won’t get to take SSPX with him, and he’s not going to get another opportunity like the one he has been provided by the Pope. End of the road. He either reconciles or leaves.
“Ergo, Fellay, (unlike one of his fellow bishops), must first obtain dispensation from the pope, (since he’s now engaged in schism), contrary to section 2 of the canon laws regarding ordination.”
Why would Pope Benedict lift Bishop Fellay’s “excommunication” (first and only excommunication, by the way) if he considered Bishop Fellay to “engaged in schism”?