Actually, from what little I’ve got down in my handwritten notes, Vasir’s frustrations with the Council only got to the boiling point about forty years ago.
The Broker was mostly under salarian control until roughly sixty years ago (when the Yahg took over) and she was not involved with the Broker Network prior to that.
I don’t know yet what would have set her off like that. I’ll have to think about it.
Purge the alien. Kill the heretic. Suffer not the witch to live.