Time will tell of course, but really...why wouldn’t the Greeks do exactly that? These ARE hardcore commies. Commies repudiate debt. They revel in the destruction of banks.
Politicians fear nothing more than loss of power. Their fellow Greeks want something for nothing, and don’t live in a society where there are prospects for growth. The population is aging, and while they are on the low end of the larger EU states, their idea of economic freedom is charging lunch and billing it to someone else. The EU would act immediately on rogue activity of that kind, and it would hurt Greece. Right now there aren’t enough assets in Greece to repossess if the creditors seized everything and put the whole population on a raft the hell out of town. Plus, the creditors would own Greece, yuck.