In the meantime the fors and againsts can live together pretending everything is normal? Ratzinger may well want to wear the internal SSPX opposition down!
Yes by acting as though they've "averted" or "delayed" the crisis they can tighten the screws and clamp down and expel those who have shown resistance.
The agreement with the Vatican is not the fundamental issue. The problem in the SSPX is the centralized power of the current superior general.
If, as was originally intended, the superior general was only supposed to be a priest, not a bishop, this grave situation might have been obviated.