hope, just read through your sitch. Not much to offer in terms of advice since your in a very different place than I am in terms of the R. As for you withdrawing and doing too much GAL, in your case I would think it would be more of the same and could cause issues. Its common advice for many of us on here because our S's don't want anything to do with us anymore and we need to find ourselves. If you can do that in a way that avoids the previous issues, great.
I wouldn't worry about that receipt and the 45 mins missing too much (to the point of allowing it to cause you to backslide).
I found two receipts from W during a time when she should have been at work. One for an ice-creme shop an hour away and then another 15 mins later at her work. No way she physically could have been in both places so the receipt was likely dated/timed wrong. This was from two locations that should have reliable registers so the fact your H's receipt was from a road side farm adds to the mystery.
Since my sitch is different I have to ignore those things for now completely because my W is fully checked out of our M and in an A. I'm sure those on here that are following similar paths can help you figure out a way to tackle that issue.
Good luck.
Accept what is, let go of what was, and have faith in what will be