Countries don't get to reduce their deficit from 7.x to 3.x % of GDP overnight without someone noticing there's something odd going on. For instance, a Dutch member of congress asked questions about this in the Dutch congress when the Euro membership of Greece was being debated but was completely ignored. Fritz Bolkenstein, at the time EU commissioner for the Netherlands, stated publicly that the EU commission knew all too well that the Greek numbers were doctored, but that a political decision was made to let them in regardless.
The question is, did the Greek government cook the books by themselves or not? And given that the politicians making the decision knew that they were doctored, how come all this is suddenly all only Greece's fault?