If they are fresh killed, and only in the cage a few hours they are just fine to freeze.
Furthermore, rabbits for large constrictors are left at room temperature to thaw for a few days before being fed, and this has been done this way as long as I can remember. Never heard of USDA guidelines being applied to thawing rodents , which routinely carry bacteria and parasites to begin with that our snakes are relatively immune to. Search for threads involving food poisoning of snakes....not a very common issue and there are a lot of boneheaded keepers that really don't know what they're doing to begin with. Know what I mean?
Literally thousands of breeders thaw rodents by just leaving overnight to thaw and bringing to temp in warm water, don't really know where you're going with this Boger. You're applying human food guidelines to frozen rodents. Eat cat food and it's probably going to make you sick. Apples to oranges bud.