I don't think Darabont seems like an arrogant whiner at all. He seems to have accepted what happened, though he was probably quite upset when it did. He seems reasonable.
Still, that line...and the scary thing is, I can totally imagine Spielberg--just from knowing his personality from interviews and everything--laughing at that line, saying, "Yeah, yeah! That's great! We gotta use that." Let's hope he has a voice of personal honesty deep down inside that tells him, "Admit it Stephen, that line is horse****."