He's depleted and pissed off. He peaked when he thought he had to only to find it was pointless.
He starved himself for nothing. Anyone would be a bit peeved about it.
Nah, that's not it. For the Mr. GetBig, it doesn't matter when you peak before the contest aslong as you have a working camera to take pictures of it.

I feel he's angry because a date was set months ago and has been pushed back 8 weeks from the original date. Dov thinks there is a farce being pulled in regards to the postponing.