Thanks JK, I was actually hoping you'd respond, because of your comment on someone elses post, you're the reason I was so worried! I just don't want him to suffer anymore :( I'm glad to know he's not and that I can bury him now.
Did you at least put him to sleep (clove oil) BEFORE freezing him? I have read that just sticking them in the freezer (when awake) is NOT humane. As it gets colder ice crystals form in all the tissues. These ice crystals have sharp edges and can cause pain. Putting them in clove oil and then dumping them in iced water is what I do.