To roughly answer the above questions - the ECB and IMF need to stop. This is above their pay grade.
This is a problem caused by a fixed exchange rate (single currency) at the wrong rate for Greece and co. Without a mechanism to adjust prices for differences in cost and productivity Euros looked really cheap to borrow from germane but olive oil looked really expensive to buy in. (Germany presses and bottles and exports more olive oil from Greek olives than Greece does)
The only way to solve the problem long term is to move the money from richer (urban) parts of Europe to poorer rural parts. Stupid ideas like the CAP don't really help. Redistributive taxation across Europe (ie Federal taxes and Federal government) are the next step. But that is waaaaay out of the ECBs remit.
Syriza is basically saying - fine break my legs, but only if you can promise a European wide discussion on how we got into this mess and what a federal Europe will look like