I don't think that is an option of any sort. Wild guess is Putin bet was on Russia getting some territories opening the door for Hungary and Poland to do the same. No idea what is the atmosphere in Slovakia, but the recent surprise in the Romanian politics makes any prediction impossible. Well, he was wrong :)
That's insane. Of course it's an "option". No one in these countries (outside of a very tiny portion of wackos) cares about the current borders, or dreams of starting a war to move them.
No, full occupation of Ukraine is not an option that NATO will ever accept. With the current state of Russian military and economy, it is a very easy line to draw.
