No don't freeze him. Just keep him in a tupperware container with some tiny holes in it and sit it on your sand with a little rock on top. Take him to your LFS when you go next. Or you can keep him in the bucket as long as you can keep it somewhat warm. You might get some credit for him.Hey greech whats the odds of having more than one or two of em?
I have no sump either so to the freezer he goes I think thats the most humane right?