Assume I didn't miss the point, okay? Don't be an ass and assume anybody who thinks differently than you "missed" the point. You're not going to be right about everything, so when you say something like that, you can be sure that there is a chance you're full of shit. You can disagree without going there, and thereby reduce the total amount of BS that you spew; without changing your views or opinions or anything. ;)
If he crashes the economy his country is no longer a threat to the world. That they just had a good decade economically is why they're integrated with Europe enough to make countries like Italy nervous about imposing sanctions; they have to hurt themselves to hurt Russia right now.
And that economic success has been largely based on the high price of oil and gas. His popularity is widely credited as resulting from the economic success. If the economy crashes, and he cracks down internally at the same time, that is going to turn a lot against him. Starting a war in Georgia won't help with any of that. And there are no cheap wars available. Why would people in Moscow be cowed by a war in Georgia? Such a war would be popular with a strong economy and chances of battlefield success. But just invading Georgia would cause further problems in Europe.
So I don't see any "point" there, except that the things you mentioned support my statement. Everything Putin is likely to do is short-term tactics, and many of the available tactics have negative strategic effects that will weaken both his leadership, and the Russian state. Strength comes from money, money comes from trade. Wars that increase trade would increase his power. But this war is threatening trade, and all the actions you describe would interfere with trade and scare trade partners.