The twist being, Bitcoin is so far from even pseudo-anonymous that stealing the cash would have been much, much smarter. The Blockchain, it turns out, is the least anonymous way to transact. All your ledger made public forever, what could possibly go wrong?
Sure, with perfectly clean CoinJoins, mixing, etc. you might possibly be able to hide the coins, for a little while. Just don't ever try to actually, you know, spend them.