I have a blood here, that insists on eating his large rats backwards, he'll actually drag the rat around by the tail or a hind leg for a long time before eating.
Very weird!
Its like some kind of ritual.
I would think that theres a slight possibility of the legs somehow affecting him to swallow correctly, but in most cases they will spit it out or figure out some way to get it down.
if you are worried, Have u tried using hemostats and getting him to eat from the head?