I do not let my cats anywhere near my ball pythons. Predator and prey from both sides. Either the cat will bite the snake, or one day, one of the snakes will mistake the curious paw for prey and then strike and constrict - and then it won't be so funny.
I know it seems cute, but it's really not safe for either of them.
I completely agree, there is too much chance for something to go wrong. Your cat looked very ready to eat your snake. Animals can be very unpredicatable, and as cute as it is to watch, you're taking an unnecessary risk with your snake and your cat.