The president of the ECB certainly did not like the market reaction to the new measures he introduced. He can probably blame himself, at least partially, for creating huge expectations and not meeting them.
Draghi did some damage control, especially in explaining the magnitude of re-investing proceeds and also admitted, in the video below, that he was trying to mitigate the market reaction.
Read the rest of the article ECB QE: Are reinvestments worth an extra €20 billion/month?