Is this the logic and the plan

If Greeks reject the 50% controlled default on the debts they owe to the banking sector, - without a 50% haircut, and a further 130bn euro bailout, on top of 110bn, Greek debt spirals out of control and the country goes bust.
At this point, the value of the debt falls to maybe 10% of its face value and Greece has broken all the rules of euro membership.
The euro leaders will be faced with the option of a forced transfer of taxpayers' money to shore up the entire Greek economy with no surety, and no "local representatives" as currently planned. Or Greece leaves the euro.
Most political economists believe this has been the logic all along, and brave though it has been for Prime Minister George Papandreou to try and buy time to do a proper structural reform of Greece, the implosion of Spain and Italy has robbed him of that time.
Greeks - even those fiercely opposed to Pasok from the left and right - are resigned to the fact that the country faces years of painful restructuring. The real question at issue is a) under whose control and b) in whose interest?
Everybody can see that an external devaluation will be chaotic, painful and cause its own kind of social unrest, just as the attempted internal devaluation is doing.
But events are moving fast. Even as the Greek centre-left toys with the concept of repudiating "odious" debt, as per Latin America in the 1990s, the debt is being concentrated into the hands of other sovereigns - the European Central Bank (ECB), the International Monetary Fund (IMF), other governments…
The reason the markets are scared is not just because of the difference between 50% and 90% default, would signal default across the whole range of debt, causing new turmoil for European states.
What caused Mr Papandreou's sudden move? Even some of the MPs closest to him had no idea it was going to happen.
A potential reason is capital flight. Anecdotal evidence suggests that the Greek elite are buying up property in London just as fast as they can find berths in Poole for their yachts. They are voting with their spinnakers, on the basis that the game is up. In any future Greece on offer, they will have to start paying taxes and they do not want to.
The Greek super-rich have mostly left and the business elite are emigrating en masse, so throw the dice.
But if Greece votes no - and goes for euro-exit - there are several plans in the process of being published that explain what you have to do. Close the banks for days, ration food and energy, institute strict capital controls - with most probably a few fast patrol boats at Glyfada harbour to check every departing yacht for cash and bonds.
Later, you get massive devaluation, with inflation; your non-sovereign debts become instantly doubled so you cannot pay them (i.e., the stock of Greek private debt to external lenders, for example, or, intra-corporate debts).
Finally, you get the chance to become competitive again. ( Argentina did this and now they are doing well)
However, despite this very, very unappealing prospect, you are at least in control of your own economy and you do not have foreign civil servants dictating what ministers can do.