While this "humiliate them until they break" is imagination, it is quite conceivable that the surplus states, as a plan B, methodically prepare for making the case to cut Greece off, both to their own electorates and the EU public at large.  I think it is conceivable to interpret the meticulous insistence on detail of the powers that be in that context.  And if they do their job, at the moment they do this they will also have a plan to incentivize Greece to move the way they want it to move (i.E Bankruptcy with or without Euro).

Contrary to certain newspapers I fail to see this as evil. To the contrary, it is good political craftmansship. If they don't have a plan B in the current situation they are fools, and you don't go into a decision phase of that kind without a clear understanding of the desired outcome and the path you get there.