hello tim, welcome to ball-pythons.net! i feed my snakes on another enclosure as well until experts on this site suggested me otherwise. what i do before (when still feeding at separate enclosure) is that i pickup the snake while it is still constricting, moving him at this point will only make him to constrict more and you dont need to worry about regurgitate since he hasnt even started swallowing yet.
but feeding in enclosure is ideal so you dont need to face issues, and i dont think they get pretty aggressive unless they smell the scent of mouse/rat lingering around.![]()