Almost same here.
"Hopefully", it seems that the mission before the "trigger chain" is the one where you must help the goner council which is being attacked by 2 ships, and i have a save just before this encounter.
If you do this one, seems that you'll have to rescue another goner ship until success. Problem is : sometimes, all of the Pirates doesn't disappear if you fail, so there is more and more of them.
I thought i did succeeded one time because the mercury goner ship was able to jump in the next sector, but then i got a mission failed just after jumping myself in this next sector : there was also pirates in this one.
After 4 or 5 tries, there's now something like 20+ syndicate"s pirates on all systems, so i reloaded my savegame just before the council save.
So, what to do? Waiting to build an armada and put it in every sector trigger this shit?
Someone successfully did this one? How?
Edit :
Ok, seems i managed to pass through this nightmare, it seems you need at least 3 or 4 success "save the station" and/or "save the ship".
So i saved 1 ship and 2 stations and i'm now at the next stage (yes, there is another stage).
BTW, i need to send troops in a ship, but i haven't found any M7M yet, and i don't see them in any shipyard. Where are there supposed to be??
Is there another way to send troops other than using a M7M class ship?