Nope, NYT is wrong on that one. I suspect they are referring to the implosion of the real estate sector which brought down a number of companies, but none of them where banks.

QE is a word with a specific meaning, it's not just a synonym for "stimulus". It refers to the buying of financial assets by the central to increase their value, and/or to increase the money supply. Ending a currency peg has nothing to do with that.

Note that the bailout operations that did take place did so after the end of the peg.