I would not be surprised if one or two of them really were spies. I am sorry, but that to me seams like the very thing a few countries would do given the opportunity.
Here's the thing though, the deed is done, the actions that all involved now will be a defining point for how they are seen by the world at large. Western media is already quite hostile towards this whole situation, but right now is pointing the blame more or less directly at the separatists and not so much at Russia. This leaves Russia with a way out of this no-win situation that leaves them with less anger directed at them.
The issue is, for Russia to get away from this and save face, they would have to pull support for the separatists. After all that has gone into making this operation run, I do not see them wanting to pull that support. So this leaves them between a rock and a hard place, pull support and the Ukrainian government goes in and mops up, or stay the course and meet some very choppy waters on the way.
Personally, after all that has happened with sanctions and shit of late, it's not a big ask for Russia to just decide to stay the course. After all, there is not much more the rest of the world can do to Russia and I am willing to bet there is a good deal of anger in the Russian population at large over the way that the Western powers have handled this whole thing from the start.