Oh, poor squirt -- and poor Pud! I don't think they have any fun when they're like that, either.

Did you tell him he wouldn't be able to go the park while he was in the throws of the tantrum? If so, I'd follow through on it. If not, then take him to the park. (I suppose you may have already made your decision by now, though!)

Hope things are looking better!

Mia