As reiterated by President Draghi, the Governing Council is unanimous in its commitment to using other unconventional instruments within its mandate in order to cope effectively with the risks of an excessively long period of low inflation.
Remember that, during the financial crisis, governments had to save many specialised banks in order to  BIS central bankers’ speeches  1  prevent systemic disruptions. The Lehman bankruptcy caused precisely such contagion, but not because customer deposits were at risk. Rather, it had many connections to other financial institutions including, above all, many counterparties in derivative transactions.