Looks like the "hacker" was already paid with 3k BTC (2.2million in USD) shorts on ethereum before he used the DAO (as it was correctly designed.)

https://twitter.com/EthereumWiki/status/743905989682855936

Think about this for a moment . Now a precedent has been set for these weak turing complete blockchains- ETH and any future DAO , that incentivizes hackers to attack and exploit weak code regardless of HF freezing and reversing Txs. Expect more attacks in the future!