The tragic blindness of Fr Michael Mary/Fr Gregory Sim.
In justifying what they were doing when they were reconciled with the Conciliar sect, he said "generations of Traditional Catholics have never known normal diocesan life"... welcome to normal diocesan life, Father, if that is what you call it.
Obviously, only the return of Rome and the Church throughout the world to Tradition can restore normal diocesan life for any Catholic. Until then, things will be very abnormal, and you won't restore normal by becoming a "Traditional Conciliarist".

Well, they had a good run, but it was bound to come to an end, especially with Francis the destroyer. It looks like there will still be a weekly Latin Mass the Christchurch diocese, but it will be celebrated by other priests. Fr. Michael Mary will have to find another diocese that will take them. That might be okay, as long as Francis doesn't find out about it. 

So they are operating outside of the conciliar church in New Zealand? But the letter is dated July 13 and 14. That's today and yesterday. Since when are they operating outside of the conciliar church? Since today?

Yes, as of today. They will either pack up and leave, losing their main source of income, or they will double down and continue to operate regardless of the bishop. In which case, they will be even more schismatic than the SSPX are in New Zealand. The SSPX are given faculties by the bishops for confessions, marriages etc. I doubt the Redemptorists will be. 

I hope that they and the SSPXers have actually learned something from this experience.

Betrayal aside, on surface it seems they were under attack from some parties with an ulterior motive.

Background: https://www.newshub.co.nz/home/new-zealand/2023/07/paddy-gower-has-issues-catholic-order-accused-of-abuse-of-power-unauthorised-exorcisms.html

Response from Fr. Michael Mary during a Sunday sermon: https://www.youtube.com/watch?v=zLuioV8-3kk&t=3085s

With regards to traitors that make a deal with Rome "before the time" --

There are only TWO possibilities.

1. The war is actually over, the Modernists and Communists cast out of the Church, and we re in the midst of the Reconstruction and restoration of the Catholic Church's glory. 
In this scenario, the SSPX is good, all the sellout groups are in the right spot now, the Resistance, independent, and sedevacantist groups are schismatic.

2. The war continues as fierce as ever. The Modernists and Communists continue to hold all the positions of power in the Catholic hierarchy. The Faithful must continue to Resist in order to keep the Catholic Faith.
In this scenario, the SSPX and all who made a deal with Rome are literal traitors to the cause of God and the Catholic Faith. The heroes are any Traditional Catholics who stood up to resist Modernism and the new religion.

Unless you've been ingesting, drinking, and smoking toxic substances for decades to kill far too many of your brain cells, turning you into a "space cadet", I don't see how anyone can look at today's situation and say, "Yes, it's clearly scenario #1 that lines up with reality."

Whatever happened to Bergoglio banning the Tridentine Mass (again) on July 16?
 

Um... the 16th isn't here yet. Are you from the future?