Something no one else has mentioned...you said that something "pink" was coming out of the cloaca? That is a sure-fire sign of HIGH stress.
We move when we're happy and excited...we're active creatures. Puppies and dogs wriggle when they are happy. Cats jump and run and play. SNAKES are not people, dogs, cats, or anything else you're likely to relate to. You can't interpret their movements with the same body language you'd apply to yourself or more common, emotional pets.
Some snakes naturally take to water, like bcr229's reticulated python. But ball pythons, as a general rule, are not a species of snake that looks for water to swim or hang out in.
If your husbandry is up to par, there's rarely any reason to need to soak or bathe your snake.
Also, water that is "warm but not hot" to you may seem way too hot to a cold blooded snake. Imagine a bowl of warm water...put your hand in it, and it feels fine. But if you've been playing in the snow and your hands are cold, that same bowl of water at the exact same temperature may feel scalding hot. Same thing can happen to a reptile who's internal temperatures are significantly lower than yours. If you need to put any reptile into a basin of water, that water should be tepid...neither warm nor cold...when you touch it with the inside of your wrist, it shouldn't feel like it has any temperature at all.