I would think it depends on the type of fig tree, I cut mine back to 3 feet tall and it was back to 15 by the beginning of summer. What was nice all the limbs were new and flexible so I could just pull them over to pick the figs at the top.

I have one in the same condition and I was wondering the same thing.  Would air layering get the tree to fork?  I have two long whips about 15 feet tall and everything (even the leaves) grows on the ends.  Having the strong growers be flexible as GRamaley suggests in pruning would seem to be helpful.
Sorry I don't have any direct help, Aaron, just more questions. :)

Mine seems to branch where it is pruned.

I might not prune to the ground but see no reason to be afraid of cutting back.  If your afraid of loosing next year crop I would prune part of the tree this year and another part next year.  That will give you an idea of how it will react to pruning.

Thanks! I'll have to give it a go next year.

Wish I had that problem. Mine will freeze to the ground and come back with bush type growth to about 6 to 8 feet if not covered. If you cut yours to ground level you should have same results as mine with the exception of more than likely longer branches since you have a longer growing season than me.

Each season prune it to control it.
Before bud break next season yes you can cut it back a good deal leaving some nodes to awaken.

Sarah,
Yes, air layering get's the left over mother tree to fork but I am told it is best done as it is breaking bud after dormancy. You can also just prune it for the same effect. I air layered this summer on trees that were several years old and long and pencil thin. It worked for me just great.
I also understand that if you air layer before dormancy, you can leave it on until spring. Please if anyone has an answer to this theory speak up.