Let's hope those keys were destroyed.

Roger Ver's words: If he had half the total supply of all the Bitcoins he would still deserve it.
I somewhat agree there. I don't mind if he still owns the keys. If ever he would liquidate his holdings, at that point in time it will prove to be the best ever moment to allow fresh capital to enter the market.
On the other hand, these coins are pretty much worthless with how authorities would love to track him down and do whatever with him that they think is necessary, which obviously is something completely unethical.