Sounds like it could be either an old injury or a mild birth defect. Really impossible to say. However, it doesn't really sound like anything to worry about. I've heard of snakes with much more severely kinked spines living a normal life as content as a snake may ever be.


All that said...if you're really worried about it, a trip to the vet to have it checked out may be in order. Only a qualified vet who sees the animal in person can tell you for certain if its truly nothing to worry about, or if its something that needs to be taken care of.