In some cultures and older traditions, I think it is not unusual to use an animal to "dance" with or as part of a ritual dance. Of course, some end up being sacrificed at the end but there was a dance of some sort, so is that the type of dance you are performing? Some kind of a spiritual dance?
I personally would not use any of my pets for such activities, and I have dogs, cats, etc. None, especially with a snake. The reason why you were bit? Because they are animals. That would be the most simple, straight forward answer. Even if your pet was healthy, it does not mean it won't strike out. Unless you can read snake behavior to the dot, which sounds like you can't yet due to lack of experience, the chances of being bitten again is great. I'm sure if I stress my dog--who is well trained with CGC--she too would eventually had enough and nip.
Being creative should not equate to being selfish. Your snake never had a choice but to be your pet and to be pulled in every direction you want it to take. If you are creative in your art, you can find something else (non living) to compliment your dance.