Not to overreact. That Relatio was in no sense magisterial but simply an unsubtle attempt by a tiny faction to promote an extreme agenda; unsubtle because they attempted to land their paratroops at least one bridge too far ... far further than they could have realistically hoped to get away with. It is very good that they made such a bad mistake.
It is clear that the panic which followed the publication of the Relatio was right over the top. The publication of the comments of the circuli minores revealed that the Fathers themselves were determined not to let their Synod be kidnapped in the way that the First Session of the Council was.
One reason why I reproduced in red that passage recently from Newman ... itself reproducing a passage from S Gregory the Theologian ... was to make the point that the Church has been through ropy moments often before, and that Black Monday was by no means the ropiest of them. In fact, it was really quite low in the Richter Scale of Ropiness. Ask S Athanasius, when you get a chance.
As Newman found, it helps to keep ones nerve, having a bit of knowledge of the messiness of Church History. Joseph Ratzinger, also, showed that an examination of the messiness of earlier Councils enabled one to see Vatican II in a balanced way, and to avoid hysteria.
Unlike Fr Zed, I have no experience of Vatican politics. I merely spent three decades mastering the politics of an English Public School (and great fun it was too). But it seems to me that (exempli gratia) manoeuvring the Cardinal Prefect of the Congregation for the Doctrine of the Faith into the position of being a rebel against the system just has to be one very serious piece of bad politics. The wise general selects a modest and attainable objective and then organises a broad coalition in support before he advances, keeping a prudent eye all the time on his lines of supply to make sure that the enemy doesn't snip them off with a pincer movement (as happened when poor Bruno Forte was hung out to dry by the Hungarian cardinal with the umlaut).
If I have a fear, it is that their next attempt (because, as somebody once said about a different gang of terrorists, "They haven't gone away") will show that they have learned elementary tactics from this particular dismal failure.