Hi , the truth haven't out yet and I believe that those stolen coin are still in ETH and ETC blockchain. For now the most impact that will affect ETH and ETC is the upcoming uncontrollable ICOs not the stolen coin. We do not worry on how the stolen coin will be done, but we worry about ICOs that will affect both ETH and ETC.
RE: Chinese Bitcoin Giant BTCC Launches Global Crypto Exchange ‘DAX’ with Ethereum Classic