The 500% comment was just absurd, and made him sound very arrogant and full of himself. Other than that, I got where he was coming from, as far as wanting a break, but you can't blame the rest of the guys for wanting to go on. The idea that he can just go back whenever he wants is a little disturbing; if you are a drummer they are thinking of hiring as a replacement, will you be happy knowing you are merely keep his chair warm? Plus, how can the band really move forward if there is always the possibility that Portnoy will call them up one day and say he wants back in?
Also, I wonder how much Portnoy exaggerates how much stuff he did with DT. Okay, we know he did a lot, but he makes it sound like he did EVERYTHING, but on his forum yesterday, Petrucci sort of contradicted that by saying that they have a manager who has always taken care of certain aspects. Meanwhile, Portnoy would have us all believe that he did it all. I wouldn't be surprised if Petrucci or some of the others aren't a bit tired of him taking credit for every little thing.