Why ask if you know?
You did all you could. Don't you love it when people ask questions, look for advice, want to know what to do then reject it all because they know better? Why do they ask? I assume it's to get their view confirmed and when it isn't they act like they'd been dissed. He'll regret this choice but try not to rub it in - just change the subject if it ever comes up.
Well, I spoke to him yesterday, and I don't think he will rescind. He told me they "upped" the offer to a full year with no interest on the loan. Now, I don't know what kind of moral person sells a 10 year mortgage for a non-necessity to a 79 year old, but there you are. He realizes that there is a high probability (I'm sure we'd all set that at 100%) that he'll be ripped off, but he seems content with the deal if it goes through as he understands it.
You did all you could. Don't you love it when people ask questions, look for advice, want to know what to do then reject it all because they know better? Why do they ask? I assume it's to get their view confirmed and when it isn't they act like they'd been dissed. He'll regret this choice but try not to rub it in - just change the subject if it ever comes up.