This reminds me of a similar situation I had once. I found a cache 2km down the road from me. It was a nano-cache (literally the size of my little fingernail) and after I finally got the log out (it was about 5mm thick) there was barely any room on the log AND my pen died. So, being 5pm - I left it with the aim of bringing a new pen the following day at 7am when I'd drive past to drop my mum at work. I logged a find (along with six or so others) so I wouldn't forget - but got an email from the CO accusing me of cheating. She must have checked it within...2 hours of me logging. After I explained to her the location of the cache and promised to log it the following day, she allowed me to keep the smiley, but this really stumped me. We don't win anything by doing this. There is nothing financial involved in this. For myself - not a serious cacher - it's something my mum and I do for a bit of fun. I've used this particular story many times - people who are leisure cachers or muggles think the CO of that one was a grumpy nutcase.
I never intend to cheat on these caches and have never logged a find when I haven't actually held the cache and extracted the log - it would not be any fun if we cheated though - because half the fun is actually finding the box and opening it. It's like christmas 365 days a year (or however many days you like to go searching). BUT...i am not sure how important it is to be strict about it. Maybe I am mistaken - maybe some people take this really really seriously?