I agree he isn't fat. He isn't gaunt, like he was at the end of the TdF last year (emaciated, actually). But look at those muscles -- he looks fit to me.
I poke fun of his weight as much as anybody. But when you read the hysteria in the various bike forums about Jan being overweight again, you have to wonder "how would they know?" It's not like Jan posts his daily weights in his web site for the world to see. Truth is, we don't really know if he's overweight or not. And we don't know what he's aiming to do right now, training-wise. In his mind, he could be on perfect track for the TdF.