Well, people lop off prolapsed hemipenes all the time if they've become damaged, and I also knew of some people who neutered an iquana to see if it made the male more tractable (I don't think it worked though) and I've heard that certain injuries to the tail can effectively neuter a male snake because it can damage the muscle needed to evert the hemipenes. But neutering a snake on purpose just for the sake of rendering it sterile not something I've ever heard of. Maybe you should write them back and let them know that not only is it neutered but it's been declawed as well. See what they come back with.Agreed!
I'm sure it can be done, without a doubt. But do you know anyone who has ON PURPOSE? (I'm sure accidents, etc..which wouldn't count)
Mark