Also don't know where he heard that. What I read somewhere was that they had left their anti eu stance out of these elections and focused instead on anti austerity and anti immigration. But that was done to get more votes from people unhappy with other parties and looking for other alternatives. Not because they suddenly changed their minds a month ago.
You are probably right. But a lot of it was also people being disillusioned and giving up after the no vote and the capitulation. This election had only 55% voter turnout for example. Which is maybe the lowest they had until now.
That disillusionment seems to be part of planning these days. The anti Iraq war protests where the most obvious example, biggest global protests in history achieved practically nothing, message: Don't waste your time protesting. Greece, a clear "no" to another bailout, message: Don't waste your time voting.
Short term the usual suspects gain an advantage but at a big cost to credibility, being forced to use a questionable currency encourages adoption of alternatives and being forced into silence encourages... Easy money helped pacify that and many other issues the last time around but the credibility of easy money has gone up in smoke so what's the next step? Probably a "European Spring" with those same usual suspects pulling the strings in the worst case but they have plenty of other tricks up their sleeves before it gets to that.
Don't know if the people in power have that much foresight. Or if they are only going along trusting the public is too busy and divided to do anything. But one thing that can change that is pushing for better economic policies. And a decrease in inequality so more people can participate in society and the political system.