Bitcoin was completely subverted once, but it was sufficiently early in its development that the problem could be rolled back and there was no lasting damage. Given the current price of Bitcoins, the motivation for people to search for an create exploits is much larger. If Bitcoin was compromised now, could it recover?
When was "Bitcoin completely subverted"? The fail of an exchange has no relationship to the integrity of a currency, just like the failure of the NASDAQ has not relationship to the integrity of the company of any of the stocks.