If you played one group and switched, sometimes the group you switched from will act as if it has surrendered--not sure why. Apparently when it sees your player status attached to it, it doesn't do anything (note your player name is still the name of the group in the menu).
- Create one extra player no with worlds or ships.
- Make it "NewPlayer0"
- Set Randomize Starting Positions to "False".
- Start the game, and after the "You've Been Defeated" pop-up appears select, "Continue Playing".
- Save the game.
- Restart and select the position you want to play.
Best workaround I know of.
If you just want to observe, after selecting "continue playing", your defeated position will allow you to see the entire galaxy map and watch all sides.