Wheel Hub question

Race spun. Probably got hot, or a previous seizure.
Somewhat common on 9 inchers.
On a DB conversion, possibly the disc couldn't get rid of the heat fast enough and some got into the hub. The grease will tell the story. Regular grease is just a soap and oil conglomeration. When it gets hot the two tend to separate. Then you get a cavity with liquid oil in it, and a cacky soap clunk/glob/IDK whatchamacallit. Sometimes the oil goes on vacation. Soap is a lousy wheel bearing grease/coolant. So the cycle continues, to catastrophic failure. You seem to be lucky. You should package your luck and ship some of it to BigB. lol.