If he was smart he would get with the major exchanges trading ETH and offer them 1 million USD equivalent each to reject the fork.  The exchanges will decide everything, not the miners, exchanges are the only place to make money with ETH.  Miners go to the exchanges to move profits.  The miners won't move to the new fork if the exchanges are still on the old fork.

The fork will fail anyways.  Who in their right mind would move to the new fork?  Would you?  Anyone with any common sense would stand by to see which fork wins before moving their money over, which means no one would move to the new fork.

Vitalik is taking a huge risk here because if he does this then not only does he have to put up a legal defense to keep the funds he stole, but he will also be personally liable in a court of law - he already withdrew 25% of his ETH a while back, he is now risking his personal fortune when he will be sued by the "hacker".  The third consequence is that ETH is no longer viable for the functions it was designed for.  It becomes a reversible-contract system.  It may still go up at some point, but it will be by speculation and not by viability.  People should be outraged by what they are trying to do here.  That alone should be enough for you to dump this piece of crap ETH.  

No one in their right mind should be holding ETH through this.  All the major technical supports have been broken and there is no telling how far the price will fall.  I couldn't believe I was able to sell my ETH so high yesterday.  These markets are filled with children with dollar signs in their eyes.  Pure speculation.