From the ordinary Greek citizens perspective it is a stuff up of all proportions.
From the central bankers perspective everything is running according to plan. They knew that Greece would not be able to repay the loans, just as they knew that Portugal, Italy and Spain will not be able to pay them either.
If you have a serious think about it you will also realise that for the likes of the IMF there is no real loss. After all they printed the money in the first place. Well they did not actually print it, they created it as electronic credits.
Where they gain is twofold, through the creation of financial chaos and secondly through greater control of government because that is the ultimate goal, complete centralisation of both government and the financial system

By the time the whole plan plays out the average Jimmy on the street will be so stressed out that he will accept anything. I can hear George Orwell chortling through his coffin lid!