Our spider doesn't wobble, per se, but she does have signs of it. She doesn't right herself quickly if upside down. Also, when holding her, when bringing her head up from dangling, she comes up sort of sideways--almost like she's drunk. It's kinda cute.

The wobble doesn't affect the snake's ability to live and thrive. It's just a thing spiders can have--and from what I've read, most, if not all, have it in some way, shape, or form. It's definitely not a reason not to breed them.