Is Paul Krugman Saying He Is Evil?

OK, let's rewind the tape: left-wing Keynesian Paul Krugman calls right-wing Keynesian Greg Mankiw evil for doubting the Obama administration's shall we say optimistic growth forecast. Mankiw responded to the accusation of evil by challenging Krugman for a public bet, so as to enable Krugman to benefit from Mankiw's alleged wickedness. Krugman did not respond to that challenge.

Krugman is probably happy now that he didn't take that bet, since he now too says that growth will be slow. Given his own previous assertion that forecasts of a weak economy represents evil, doesn't this mean that Krugman has in effect declared himself evil?