I am convinced that he would welcome the fact that the ECB has not joined the new fashionable wave arguing that money does not matter.
Yes, it quickly turned into a credit crunch, which in 2012 escalated into a euro crisis. However, to come back to your first question: the circumstances have changed dramatically; the identity of the Chief Economist plays a minor role in that sense. ECB decisions are not a “one-man show”, but rather the result of discussions amongst the members of the Governing Council.