"The Latin states could relaunch growth with a weaker euro, but still honour their euro contracts.
Germany would get the stronger currency it needs and wants. The German banks would take big haircut on its holdings of Club Med debt. Some would have to be nationalized. Tough luck.
The WRONG way to do it is to kick the South out of EMU There would be mass defaults, a total implosion of the EU banking system, and a global depression.