You can figure out their vitality in the SP game. Save your game and type:
You will become a reborn from JA and will have the same vitality, force, etc. But any former allies nearby will treat you as hostile, even if you go back by typing "playermodel player". So, load the save, and you can return to normal.
Wow, 1,000+ posts! Hat's off to you. I'm working on that.