Did anyone investigate the other coins that forked BTC? Those could be liquidated on the forked chain.

Also there may be another reason that the coins didn't move. Take the coins off the market in order to pump BTC after the fork. Leaving many traders without capitol to leverage against them.

If that is the case they made much more than what is sitting in that address. Think of all the profits that were taken on Cryptsy alt pumps and dumps insider trading that they wrung out BTC with and nobody will look at that coin and where it went.