Two impossible outcomes of the Euro crisis

Nobel-Prize winning economist Paul Krugman has two possible outcomes on how the Euro crisis will end. But, both of them are impossible. One possibility is that the ECB aggressively buys peripheral debt and caps borrowing costs of Spain and Italy. This is while it makes it clear that it will promote monetary expansion that boosts inflation in Germany and helps restore competitiveness between Germany and the rest of the euro zone. The other possibility is a doomsday scenario. Basically if the ECB stops protecting all the banks there will be wide spread bank runs and currency redemptions. This would mean the end of the euro system which would have worldwide implications. What will actually happen? Well, it's all up to Germany. They seem to be the only European nation with some fight left in them