Shoot. I just found one of Al's posts on this very topic.
"I wouldn't cut it back or repot until June, when the new growth will be
tight (short internodes). After that, get in the habit of pruning off
all the lanky growth in late May & repotting around Father's day.
This will ensure that you retain ONLY the tightest growth. Also, give
your plant as much sun as you can give it while it's growing
enthusiastically."
From this thread: http://forums2.gardenweb.com/discussions/2807173/very-large-very-droopy-jade-tree

So I guess that answers it, it'll stay lanky for 8 more months before it goes under the knife in June.

During winter, it may get even ganglier...what kind of light can you supply to your jade? Where is it going to spend winter - in warm or cooler spot?

Yeah I expect it will, in hindsight I probably should have pruned it this year.
I think I'm going to leave it in a west facing window, in a warmer spot.

If you keep it cool and not water too often, it may not grow too much and etiolate much more. It will have np to overwinter in temps as low as mid-high forties. As long as it is not too wet. Still should be in best light you can give it.

Thats a great idea. I know it's gone at least 3 months between watering before. I just watered it the other day but maybe that'll be its last drink for a long time to keep it under control.
Thanks!

Don't keep it overly dry if in warmer temps...I keep them all outdoors, in full sun and unprotected from any rain. They got wet again today :) But they are in very gritty mix and drain well.

I would put a dowel,piece of bamboo or whatever you have. In the middle then tie up the gangly limbs and give it as much light as possible.