relax, whoever had 400k coins in 2011, surely knows better than to dump them all on exchange he sat tight when it was at 1200, and no fundamentals has changed for him to suddenly need to cash out millions usd through an exchange where he would pay taxes when withdrawing and kill bitcoin in the process could be either a simple reorg or an off-books sale, these are not coming to gox.

PS still, out of curiosity, 0.1 btc bounty to whomever can provably link this move to an identity of the mover.