IS James Cameron really that scary?

I mean after reading this I was beginning to worry that Mr. Cameron will really freak out if 'Avatar' does not win best picture.

Wouldn't that be fantastic. A giant celebrity hissy fit. I mean the man must be able to laugh at himself. Everyone has been going on and on that he looks like an old lesbian with his hair cut, and he has yet to change it.

Unless Miranda Priestly actually directed 'Avatar'.