In my current game, (90 stars) I'm in a runaway lead on all stats so the game is effectively decided (but I'm still well short of the 2/3 for a diplo win).
The remaining 6 or so AIs are all bumbling along with Orthin well ahead of the others in science progress and science production (which is common).
However, when I was reviewing the graphs last night, I noticed that Teros, who had very little tech progress or science production, had a sudden immediate spike in tech progress, putting Teros far ahead of Orthin, which had lead the AI pack the entire game. But the Teros still has nearly no science production. I should have screen-shot the graph for you all.
It's possible that Teros attacked the big harpy base but I never saw a fleet traveling to the base and I'd be surprised if Teros would have won the battle. Plus the military graph shows no losses for the Teros.