Greece look certain to rebuff Germany and the markets. I am certain that once elections are over, Germany will make deal to slash Greek debts and keep it in the Euro. It would be madness to do anything else.
If Greece leaves, there will be bank runs in Spain, Portugal, Italy, Ireland. It would mean financial suicide for the EU. Far cheaper for German banks to write off debt. There is a game of bluff but once Greece decides the real bargaining will begin. No country will leave the Euro.