TEC have a max tier technology that causes rebel (pirate essentially) forces to attack enemy planets under influence of your culture.
Hmmmm...I am not sure what that means. Do you mean that they will warp in after the last tech has been researched? That IS what is happening, I wasn't aware that would happen in Entrenchment. However ,as you mentioned in your reply that doesn't explain why the pirates would start being active and asking for bounty or telling me it's been exhausted...wierdness...Thank you for giving me some assistance. 
Maybe it's a bug related to that tech. Did you have a TEC-AI enemy?
No, I was TEC/Marza Monster they were the soon to be assimilated Vasari or Advent.
I wish I knew more about recording replays (or re-playing them for that matter lol! I put them in my file folder, I tried Record-sp or Record-mp and it says incompatible file...oh well).
Again thank you both for trying to gain an answer.