May i remind you rule number one in Hollywood : don't believe them. Everybody is lying, the actors, the producers, the network executives.
Well, I watch House so I am well aware that everyone lies, no exceptions . Not just a Hollywood thing, although there is certainly more incentive to lie in Hollywood than other professions (much like politics).
TSCC ececutives producers like John wirth have given hints about what could have been season 3 but he can't by contract reveal too much.
I was under the impression that he chose without outside forcing (contract) to reveal the information, because he wanted the viewers to make their own interpretations of the events or some load of crap like that.