So all this came about because Russians were butt hurt about Ukraine wanting stronger ties with Europe, and yet its exactly because of this unofficial invasion that now the majority of Ukraine have a grudge to bear and will strive even harder for NATO and EU. Yep that should do it!
They were more disturbed by the overthrow of the legitimate democratically elected Ukrainian government with a pro-EU/western one, only a few member states have ever being given a vote on EU membership so why should the people of Ukraine be given the choice?
Putin gives his view of it here in the first 10mins:
http://www.youtube.com/watch?v=P0stuDpk318