Do you know half of Ukraine?:) Flipping in their associations it not completely new for them. A decade of bad experience and they would be back licking Russian boots. It is already starting. The main challenge for Russia would be to avoid awarding this behavior too generously.
In my humble opinion the best outcome for everyone would be for Ukraine to become a self-sufficient truly independent country running its foreign policy according to its own interests and not as a proxy for foreign powers in their rivalry against each other. Just picking between sponsors doesn’t change anything.
Too bad their political class doesn’t let it happen. For that reason it would be a perpetually destabilized third world country for a long time.
I know folks from west of the dnieper. The mood is anti Russian