If your regulator says it is acceptable to them, then I would consider that. Did you get that in writing? Did they writeit up in an exam report with that recommendation. If not, then you might want to reconsider how much value that approval or assurance has.
I don't think it would save you in a litigation situation. I can make a pretty strong argument that my right to cancel is worthless once I receive the money, whether you have provided accurate material disclosures and a new rescission notice or not. It's pretty hard to argue that I can cancel the transaction when I have been making payments on it.
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The opinions expressed here are personal and do not represent opinions of my employer.