More info.
I decided this needs investigation.
I have loaded the game both before and after the Ryu intrusion,
The situation before was Whiplash had a warrior camped outside the mayan city with an archer approaching. The mayans had a warrior entrenched inside.
The situation after was that the Mayan warrior had been destroyed after attacking the Dutch warrior in the forest. This attack had a 3.3% chance of success.
So either some knucklehead decided to join the game late, and do a suicide attack, or we have a treacherous mis-use of an AI ?
I will think on this a bit. But My first thought is how can I lock the AIs?