They cold reject the EU, Germany and the IMF, but they don't want to pay the full consequences of their actions. Really the Greeks could probably do with a little less fiscal independence.
I don't think political decision making is the core issue here, it's a faulty system that rewards bad behavior. There's plenty of good reason to criticize the behavior, but that's not the crux of the matter. One currency for many fiscal policies doesn't work. They have two choices: give up fiscal autonomy, or drop the euro and decrease the value of their own currency like an independent nation going through this would. I can't see how the Greek people would go for less autonomy. Either way, they have serious consequences. They might as well emerge from this a free state.