POOR MISGUIDED HOMINI POST-SOVIETICI
Estonians in the last few years, have refinanced their home mortgages in Euro or other like currencies. These loans would become unplayable if Estonia tried to back out of the currency merger at this point. You could say that their population gave up state sovereignty for cheap home payments in a future currency they will have little to no advice in going forward.
Hopefully if the Euro does shatter, Estonia can find a lifeboat in the future Next Generation German Mark. They have made the currency jump a few times now, what could be so hard with possibly having three currencies in one rolling twelve months?