Hmm, going off of this comment "as long as you haven't paid or registered yet (free users are asked to register their accounts before they file).", I wonder if ...

Correct, I have not been charged for anything yet, and have not payed online at all

Yes, but I get a message that "Once you register your tax return, or pay any TurboTax fees, we can no longer clear and start over." .... I have technically done...