Height problems

I replaced everything on the front end of my car earlier this year, all the ball joints, upper and lower control arm bushings, tie rods, etc.
I hit a bump earlier today, nothing harsh, and noticed the ride height on the right side had dropped a couple inches.
I checked the rear torsion bar mount, it looks ok. The adjuster is right where I adjusted it when we redid the front, it hasn't backed out any. The bar itself doesn't look broken. I've been driving it for months with no issues until today.
I plan on removing the torsion bar tomorrow and seeing if I can find anything wrong. Anyone have any thoughts on what the problem may be?