They just had a meeting with the Priors at the end of January. At this meeting, they were informed about what is in the works. The meeting was one direction, INFORMING the priors of what's coming, as opposed to asking for any input.
A deal with Rome IS still in the works. The official story -- the deception -- will be that Rome is just accepting us "as we are" unilaterally. Of course this is false, because it's a fact of history that the SSPX has already transformed (past tense) into something unrecognizable. Priests have been ejected or at least convinced to leave, a bishop has been kicked out, bookstores have been purged, the whole organization has been "re-branded", the Archbishop's works have been censored (even to the point of SUING close friends of the Archbishop who wanted to publish his works!)
Unilateral is from the Latin unus, a, um ("one") and latus, lateris ("side"). One-sided.
Long story short, it's TOO LATE for anything "unilateral" because the SSPX side has already been feverishly working over the past few years to make itself more palatable to Modernist Rome. And we're talking about actions that are past tense -- no speculation is involved.
Remember those chapel(s) -- I believe there was one in Michigan -- which have signs that don't say anything about SSPX, Traditional, or Latin Mass? That ties into this. The Personal Prelature will have to lose the "SSPX" identity, which will conveniently cut loose any remaining "baggage" of Archbishop Lefebvre (whatever they haven't managed to purge yet).
It's all over.
Apparently there wasn't any reaction or protest. (Which isn't too surprising. The X degree boiling water which will kill a frog is only 2 degrees warmer than last week's water -- which was "X - 2" degrees -- which wasn't hot enough to do damage. Classic frog boil.)
Naturally everyone who was A) able to see clearly and B) inclined to have a problem with the new orientation has already made their move over the past few years. The remaining priests are "compromised" from being silent for so long. They will be frog boiled the rest of the way until they end up on so many dinner plates.