Ukraine, with or without Crimea, is screwed. Its tiny economy is pretty much on a par with that of Greece, and the IMF can't wait to get in there and impose austerity. Except for the usual plutocrats, Ukrainians are going to suffer.
So, think about it: if you lived in Crimea, would you be more likely to go for a Russian bailout with continued cheap natural gas, or a whole lot of pain? Personally, I think I might go with the dreadful Mr. Putin over the parsimonious Ms. Merkel.
Do the "nationalists" in Kiev understand how hooking up with the EU will make Ukrainian poverty so much more obvious to the Ukrainian people? Yes, much of the blame can be cast on Yanukovych, but it's unlikely that replacing one group of corrupt assholes with another will do much good.
In the meanwhile, the media are not paying enough attention to Syria, Turkey, Venezuela, the CAR, or other places where people are in a hell of a lot more trouble than Crimea. Pretty clearly, the Russians are going to keep Crimea this time around, the (very) Light Brigade of the USofA and Europe notwithstanding.