Just a few facts as advice
Fact 1; You dont need to feed snakes out of their enclosures
Fact 2; If your snake is biting and wrapping it is hungry
That is called a feeding response bite
No good for you or the snakes
Easy fixed by feeding it more
Fact 3;Its NOT part of owning snakes to get bitten
If bitten it means you made a mistake
Thats the only thing getting bitten means
Enjoy
If you want dog tame snakes read on....
As we all know Pythons are opportunistic feeders and not very bright, do they even feel hungry? iv been keeping and breeding for while and iv found the best way to get dog tame snakes is to 1. Handle as often as possible. 2. Feeding out side of the enclosure (this just reduces the amount of scent in the enclosure which would be the main thing that will stop events like the one in the photo above. Food was obviously on its mind if it coiled 2. Stop dangling the food item in front of the snake incouraging it to coiling and then continue to tug on the food item for a few seconds and 3. Let the snake settle into a second click clack wait for it to enter its hide and for its head to be hidden (not with its head out looking at you) and then just place the food item in the click clack letting the snake eat it in its own time.
Eventually the snake will relise it's foods not movin and will slowly opening its mouth without coiling. Iv done this many times and I'd say about 95% of animals become dog tame for me when I turn my attention to them (pets not breeders etc or something I'm feeding up I want to be less likely to bite when it's 8ft long etc.)
Iv never had my snakes coil me in 13 years of keeping, if this happends your doing something wrong. you need to read your snakes body language and keep track of its head at all times, iv been bitten heaps of times but that's what snakes do and it is apart of keeping. I beleive I could tame any water python, scrub python etc to be very calm. Iv tamed jungles that were a nightmare, but with useing a hook and then eventually working my way up to free handling, calming the snake they eventually get dog tame....
You need to send multiple msgs to the snake so it knows its not feeding time when your in the equation.
I havnt delt with any retics etc so Im not sure if they'll take to my methods aswell as the Morelia, lasis etc iv delt with in the past. But feeding out side the enclosure is going to reduce the water comeing off the food and the scent from the food item so I don't why you think it wouldn't benifit the snake......
And why is the snake on sand? If it were to rest it's head on the sand and inhale a few granules then what? I know ants live on sand but you want to eliminate possible problems, replace it for paper towl or newspaper would be my advice and learn how to read your snakes.