As for the expulsion of Russia from the United Nations, I do not think that this will solve the problem. On the contrary, it may complicate the problem because there will be no place for dialogue. In addition to all that, the United Nations is an empty organization that does not have any influence on powerful countries. It affects poor and weak countries but it cannot have any effect on strong countries.
Perhaps the solution is to sit at the negotiating table and try to find a solution that satisfies both parties without external interventions that further complicate the problem.
Sure, not all Russians support Putin, but most support him. It is on the Russian people that Putin relies. Putin himself comes from a people with a great-power outlook.
Note that it isn't only Russia. The Ukraine is made up of people from the same basic location as Russia. They are the same kind of people.
Also note that the fact that the US is behind the Ukraine push shows that there are power-people all over the place. Britain and the Papacy are a couple of big ones, and the Federal Reserve Bank (in the US) is the same.