Having the wobble IS normal for spider ball pythons.
You risk getting a snake with a bad problem within EVERY morph.
Your constant comparison to Parkinson's is irrelevant. The spider wobble shares very few symptoms with Parkinson's, and snakes do not have complex enough brains to feel embarrassed, ashamed, frustrated, or unhappy. Comparing the wobble to a human disease is laughable, because humans and snakes experience life so differently from one another.