About snake baths: remember that our bodies are about 98.6*, so if the water feels warm to us, it's too hot for your snake. I think many snakes that are given
baths are in water that's too warm for them...that's one reason they panic & struggle to get out. The other is the total lack of traction...that alone freaks snakes
out too. If you put a snake on a smooth glass coffee table they have trouble moving, because there's nothing for them to push off of, & that's bad enough, but
they aren't used to being in a "bath" either, so yes, they panic. (And snakes can be harmed by excessive heat too, so it's not to be taken lightly.) Since the max.
temp. for the warm end of a BP's enclosure is about 90*, I'd say the bath water should be mid-80's...and also, the water should be shallow so the snake's body is
touching the bottom. You can also put a cloth in there for added traction, plus the mild abrasiveness will help with shedding. Or, just use a very damp towel...
When you say "your humidity is at 70%" do you mean local weather? or in your house? or in the actual snake's enclosure? Keep in mind that the humidity will
normally be much lower in a heated snake enclosure unless you use humid hides &/or substrate that retains moisture (coco. fiber, orchid bark, moss, etc.)