That's very poor form! Is it a legal thing because he is a commercial producer?
We have had turkeys in the past and there are various methods to dispatch them. Probably the simplest and most certain is to hold them upside down and lay their head on a hard surface, hold the top of the neck to stop them moving and bang them on the head very hard and then cut the head clean off. I used a sharp axe to do both jobs: back of the axe for banging and blade for head removal. It's fairly messy, so keep hold of the neck.
They flap like mad and are very strong in death throes, so either holding them firmly around their middle against your body with wings pinned down and legs held firmly with the other hand, or putting them in a "killing cone" (traffic cone with suitable amount of top cut off for neck to come through and wings to be pinned). If you do the former, keep hold of the neck so you don't get sprayed, but don't grip so hard that you stop the blood flow as you need it to drain out. As soon as you are able (ie post-flapping) hang the bird upside down by the legs (string around the ankles and a place to tie it) for the rest of the blood to drain out. Whilst this happens, you can start plucking if you wish. Keep the bird hanging for at least 20 minutes, but preferably a lot longer (days). Put the neck stump in a plastic bag tied on so you don't get bloody feathers.
Hang for 10 days before eating in a good cool place. Plucking works best after rigor mortice has gone off if you don't do it immediately and don't gut/dress them more than a few days before cooking.
I think the legistlation is in regard to commercial concerns: ie if you're selling them rather than for your own use.
Good luck. It isn't a pleasant task but certainly makes you appreciate your Christmas feast all the more!