scanr, Soros doesn't have the financial muscle to affect the oil and currency exchange markets the way they've been moving the last few years. He's rich, but he's not that rich.
It would have taken him and many others like him, working in concert, to manipulate those markets significantly. Word would have gotten out if that was being done.
Besides, if Soros (et al) was behind it all, why didn't he wait until after the election to relinquish his control, instead of letting prices fall starting last July? That seems a rather dumb move politically, if he wanted to make Obama out to be some kind of hero savior.