So I was wrong about being wrong, there was at least some planning towards a Grexit. Perfectly understandable, treason at worst it would have been not to prepare in such fashion. Sadly it was still a path the Greek government didn't want to walk, perhaps fearing the vast pro-euro majority after they managed to isolate themselves completely.

The stand-off which induced the ECB pouring more liquidity into the Greek banks starved of cash by a bank run followed by the painful capitulation did obviously great harm to a very weak economy:



With the market opening and it's 20+% crash those are just numbers which I don't recall seeing in an European country. Shocking stuff and I anticipated worse then most.