The IMF can write off the debt, extend more credit to Greece of let the Greeks default.
If the IMF chooses to let Greece default, the euro will crash.
The Greeks are in control of the situation
Hardly.
The Greeks are in control of the situation
Without more loans from the ECB, IMF or the Euro governments, Greek checks to their employees and retirees will soon bounce. Without more loans, Greek banks will soon run out of cash.
The Greeks control their own fate, not the situation. The Greeks cannot expect more free money while telling their creditors to f-off.