Not a chance. The path to the EU offers Ukraine access to a market for Ukrainian goods and services nine times larger than Russia. It also offers a path towards lower levels of corruption, fairer dealings and the rule of law. Putin's Eurasian Union offers crony capitalism, oligarchism and criminality. The "deal" on offer was a clumsy bribe and not to be trusted - Russia has reneged on previous deals with the Ukraine, including the one where they promised to stay out of Ukrainian politics in return for the Ukraine giving up its Soviet era nuclear weapons.
Russia in its current form is unsustainable. It's only a matter of time imo before we see Russia in some form making moves to join the EU. I fully expect this to happen within my lifetime.
No it doesn't in actuality as Ukraine can't produce anything to eu standards and will have to rebuild all its power stations and upgrade all road and rail transport with no grant money all with a population of nearly 50m, tragedy lies ahead.
I would support a split of the crimea and Ukraine as for a variety of reasons they hate each other.