In a decentralized protocol, how can the creator take control of an account? It's, in a way, the right of the guy to create a bitrex account to steal money - even if it's unethical. What could be done, perhaps, is to mitigate this strategy by tampering the user interface in the online web wallet. Say one tries to enter "bitrex" in the field. Then a message comes out and says "bitrex is a known scam account. Perhaps you meant bittrex - the online currency exchange?" - or something to that effect....