Inspired by some moron's stupid insistence on Gamefaqs...
If you take advantage of the Mysidia Dancer to inflict Piggy on you, you could use that in the Golbez-Rydia battle, where Hold Gas/Cursed Aura does not work on you, thereby allowing you the chance to revive characters before Rydia shows up.
The only thing I'm not aware of is any possible healing before the battle....