Do they jump in a hole? If so, they did not bail. There is a STUPIDSTUPIDSTUPID glitch that can make you go sad if the toon next to you does. It sometimes doesn't show you shrink, though. For some reason, it can also show you teleporting out of the battle.
There is a good thing about this glitch, though. If, say, there are 4 Toons on a battle like this:
Toon-Toon-Toon-You
Then:
Sad-Toon-Toon-You
If you have lost some Laff Points and you are NOT standing next to the toon, it can heal you.