This guy doesn't really have a leg to stand on. Just like when the flash crash happened on the real stock market, transactions are going to be rolled back. One thing that has become abundantly clear from reading all of the comments on the Bitcoin forums is that the investing knowledge of most BTC traders is much less than your average equities, fixed income, or ForEx trader. MtGox is a pretty low budget operation, bu…
I had transactions in the flash crash that weren't rolled back and I lost a big chunk of cash (well, for me). I just don't see how an exchange that doesn't have builtin failsafes/circuit breakers can just roll back trades. I think that in this case, the exchange should be liable. He was just exploiting the market.
There's some speculation that when some more powerful market participants (read: Goldman Sachs) are on the losing end of a questionable trade they complain to the exchange and get the trade busted far more frequently than when it happens to less powerful participants.