This letter from the Italien district superior is untruthfully. But we're getting used to these distorted words of the SSPX superiors.
(Was he the one who kicked the brave Fr Abrahamowicz on behalf of Bp Fellay?)

In reality Bp Fellay and his sellout-team (Pfluger, Schmidberger etc) alone divided, no, destroyed the SSPX by breaking away from Archbishop Lefebvre's wise course which he gave as legacy beginning with 1988 to the SSPX.

The three loyal bishops Williamson, Tissier de Mallerais and de Galaretta declared united in their letter to Menzingen from 7 April 2012 that they will stand firm to Archbishop Lefebvre's legacy.

Newrome exploits this situation but responsible for the division is Bp Fellay and his sellout team alone.

This is like a game of passing the parcel. Why does the UK mission quote the Italian mission quoting the CDF?

My take here is that the UK mission wants to convey that:

1) Rome is separating the Three Bishops from a decision on the Society, and
2) SSPX missions see an opportunity to jointly blame Rome for SSPX disunity.

This would be false because the disunity is internal. Rome is only reacting to it.

Careful now Wessex, let's think out of the box here.

It's worth noting that what the UK District quotes have only been published on the Italian District website, there's an official silence on all others. I say official because, despite the huge relevancy of the information regarding the communique, all of the official mouth-pieces of the Society have remained silent. Therefore, the publication of these things is an act of bravery, as it is breaking the pattern.
What does the UK District say in re-posting these things? It is saying that Rome is not to be trusted. Now, taking it as you have, this is nowhere near enough - Rome is not to be trusted, yes, but where is the criticism of Bishop Fellay and the Menzingen Crew? What you have to do is look below the surface; to say that Rome can't be trusted is to imply that one should not make a deal with them, which is to say that those who have made it their business to try and gain submissive union with Rome are barking up the wrong tree. In very clear implication, to re-post these things is to criticise Menzingen and the new direction.
But... Why not say this themselves, with a fresh statement? Maybe they wish to show unity with other districts on this matter, and also, if Bishop Fellay comes knocking to ask "Why are you undermining my authority?", they have recourse to claiming that they merely re-posted what was already in the public domain as well as another SSPX website, therefore they are at less risk while saying just as much.

Who says priests can't play politics?!