I think a lot of times, the deer gets gamey tasting the longer you leave them whether it's hot or cold (not field dressed). Yes, the meat will spoil with higher temps. I shot a deer once that we backed out on overnight. It was a pancreas hit, but I didn't know at the time. The deer was probably dead within minutes. My friend heard the deer crash down a slope but we didn't go to check because I dodn't like the shot at all. It was bout 60 degrees overnight. The good thing was that it was a damp area where the deer lay and it was in the shade. The butcher said the meat was fine, but man it sure didn't taste good and it sure didn't smell good. Anyway, if it were to happen again, I think I would either have the whole deer made into sausage, hotdogs, etc, or donate it to the food pantry (only of course if it was OK'd by the butcher). Just my thoughts.