Soros may be a bad guy, but Putin is worse.
What if this is Soros and Putin working together to create a pretext for Russia to subjugate Ukraine? It is quite possible, as many belive that Soros worked for the KGB and now works for Russian intel.
Well, Soros has developed a pretty good cover, he's wanted for a number of serious crimes in the Russian Federation, and authorities there have issued several international arrest warrants for him.
Of course he receives protection from the US and European nations despite Interpol's agreements with the Russian Federation.
It would be easy to test your theory, simply turn Soros over to Russian authorities, and if he magically beats the rap, he's the agent you propose he is.
If he goes to prison, then he's not the Russian plant you suspect, and a bad guy goes down.