Holy C... same happend to my rear wheel, which luckily didn't came off.
Good to hear that you are all fine.
I check the drumbreak to if i where you, mine where set to tight, so the drum got hot and pushed the bolts out.
luckily it was the front and not the fresh painted back, it look awesome...
We are at france for the vacance, took the bus for a little ride and found an old stonefactory. Saidly we weren't able to get thru the fence.
So instead we took a picture at the front.
Gtz KC