How about if I give you one of those microsoft answers? You know, the kind that aren't helpful...
Most germs, parasites, etc don't cross species too well. If they do, they can usually only go to another closely related species. Such as snake to snake, but not snake to mammal. So your leo is kinda in the middle.
Most germs, parasites, etc don't live very long without a host, but at least a few can. Most germs won't survive being wiped with vinegar (as long as it was a good wiping that got it wet enough), and even if it survived, the physical act of wiping may have removed the germ. Most germs won't survive in the freezer, although I'm rather uncertain about the 5 hours part. It is probably one of those in the middle things... some would die the instant they got frozen, others might last 12 hours or more.
So, the probability is that the accurite will be just fine with your leo. However, the germs that can survive longer and/or more extreme conditions can be the most nasty. At the very least, they are certainly the hardest to get rid of once you've allowed them to get established.
So, while it probably would be fine, I think I'd rather spend the $12 or so and get a new accurite and be sure. You could always save the one you used with the black rat and then use it sometime months from now when you are a little more certain that any germs have long since died off.
Oh yeah, I'd also love to see someone write a quarantine sticky that gets into a lot more detail than just "you should always quarantine" which is most of what I see in posts. Who's up for it?