That would be a good explanation, but from Hank and Logan's conversation from this issue, Hank heavily implies he was driven insane by constant traumas and stresses, and that maybe he was always a monster, just waiting for an excuse to come out. And also, Hank didn't get resurrected by Cerebra until well into X-Force's run(I can't remember the issue # where it happened). Unless something happened very early in X-Force's run that they could retcon in.
I still think it's a combination of The Chronicler still controlling him and maybe something else like Sublime possessing him.