That article has some very interesting details and sources, thanks.

A different angle I like to focuses on, is a telling one to me. While not exactly evidence, it establishes a strong motive, that is easy for most to understand. Before the coup/revolution, Ukraine needed financial help and was looking at a proposal from the US+EU and a proposal from Russia. When the Ukrainian president chose Russia's deal, Ukraine almost immediately descended into blood, fire, and a toppled leader. Then, the US hand picked ("vetted") a couple new presidents to choose from, paid for, and over saw the public's election from their choices. A completely suspicious timeline of events.

Both the EU and Russia were pressuring them with sanctions/trade restrictions and they were in debt; Ukraine needed money and a trade deal to dig out. Russia's proposal wasn't super and wouldn't stroke their ego, but their proposal would do it and was strait forward. The US had tons of strings and conditions, would be painful in the short run, but was expected be a much larger payout and market in the long run; free trade with the EU sounds enticing to the populists. I think it was clear Yanukovich wanted to that EU free trade dream and wanted to go with their deal, but he just couldn't get past all the red tape and conditions. It was probably overwhelming without a cabinet of experts, like we hope all EU/US government deals are made with. When he abandoned his long-public support for working a deal with the EU and chose the Russian deal, within days people were dying, cops were dying, huge protests were everywhere, and Ukraine was completely coupe'd. As your article mentions and gives evidence towards, the so called "revolution" happened so fast it was obviously pre-planned and prepared for, waiting on that "no" decision on the US+EU trade deal. I find that a super strong motive and easy for most to understand plainly.