I've noticed Greek politicians making excessively bold, emotional statements in public since the election, where perhaps some pragmatism and diplomacy would have moved things along better. It gives the impression that there is some intention to exit whilst avoiding blame with their own electorate (who I read are majority pro-EU by polling, contrary to the impression giving in media). Extremely uncooperative negotiating followed by throwing it to the people is one such tactic, claiming that you are forced to allow a banking collapse because of EU philosophy is another.
They want to be in the EU because they remember the drachma, and whilst germans will remember a strong deustchmark that was never the position of the drachma.