It wasn't a full reset per se, just a reset to a known valid state. The project got buggy there for a couple days, and was granting RIDICULOUS credit that people didn't earn. I lost ~97k. Some of that was valid credit, but most wasn't. One dude lost ~11M, most of which (~10.8M) came on a single day (and we know that can't happen).
Now the limits are a separate point of contention...