Haha - I had a similar experience once, but not because of a curb. I used to have a '76 Z-28, all hopped up with a small block chevy 350, and a Muncie "rock-crusher" 4 speed manual. Of course, I drove it hard. All the time...
One day, I'm driving, and intermittently, I hear these loud popping noises. Since I was almost home, I didn't bother checking it since the car was still driving ok. So, I come up to the next red light, wait... turns green - I then START to drive away, and POP! THUNK! The car leans to the right.
I get out, WTF! Take a look at the passenger side, and see my right rear wheel lying on its side, off the car!
All five of the wheel studs had snapped clean off. Of course, like all things that happen bad, I was going to upgrade the rear axle, however didn't have the money to do it yet. The guy that came to tow it away had a heck of a time getting the car safely on, since he didn't have a cherry picker (type with a flatbad).
Ahhh.. the good old days...