CathInfo.com

As regards consecrating emergency bishops AND conferring jurisdiction on them, the SSPX cited Simonetti’s “The Arian Crisis in the Fourth Century” in their May 1999 SiSiNoNo Angelus insert article titled “The 1988 Episcopal Consecrations: A Theological Study (Part I), in which it noted:

“Longer ago, during the Arian crisis, St. Eusebius of Samosata and other bishops, not only consecrated but even established other bishops in episcopal sees,³⁹ and the Church has not hesitated to proclaim his sanctity.”

Later, in Part II of the same article, it responded to the FSSP’s attack:

“ For that reason, to the authors of Du sacre episcopal contre la volonté du Pape who object that "St. Eusebius [of Samosata) acted without the pope's consent but not against the pope's consent, " we reply that only a question of fact is at stake, not of principle. We concede that St. Eusebius was not faced with the "No" of a pope who promoted and favored Arianism, and demanded respect for laws which would have deprived of help souls placed in grave spiritual necessity. But, had St. Eusebius found himself in that position, he would have had to follow the moral principles recalled above and to fulfil, not "against" the pope's "No" but despite the pope's "No," the most serious duty of charity laid upon his episcopacy by the grave and general necessity of souls.”

So there's precedence in the Church.  Interesting.