Note that the whole revolt in Western Ukraine was because these people wanted to be like those in the EU... unemployed baristas.
It's hard to tell what was told, and to who. The people at Maidan were a ragtag bunch, and you can bet that a good part of them was interested in the process more than in the results.
Revolutionaries often love to tell tall tales, knowing well that when the dust settles many of those who are misled today won't be around to question those stories. Revolutions live and die by the current moment; anything that can be a weapon becomes a weapon. Blame game is also extremely popular, no thanks to GWB who is personally responsible for that and more :-)
But even if we look at a small percentage of Ukrainians who were aware of details of the trade agreement (that was not joining the EU,) they likely hoped to move on to Europe and then perhaps elsewhere because Ukrainian economy is worse than Greece's. At least in Greece they honestly wasted money on high salaries of bureaucracy. In Ukraine all the money was stolen, is being stolen, and will continue to be stolen because there is not a single hint that the new team in power is planning to turn the tide of corruption. The people are just trying to swim up.