I pruned it back pretty drastically, but a couple of days later, all the remaining leaves were yellow/brown and dead-looking. I didn't want the dying leaves to invite disease and critters, so I cut out most of the leaves. Now it's just a few sticks poking out of the ground.
I'm going to keep watering it and see what happens. I don't think its root system is able to drink up much water, if any at all. It's in really good soil right now, so I'll see if it recovers.