I have a spider that wobbles, for some reason He is one of our favorites....He eats great, is very docile. And the wobbles are yes a lil sad, but makes him special. He gets twisted up sometimes, or falls over when trying to climb,it just ads to his character. Its just one of those things that without extensive research nobody will really know for sure what causes it. Some people say they wont own a spider because of it? Well to each their own.....I dont know what I'd do if I didnt have my Spider, and my BEES, those are what got me into ball pythons to begin with. Ironically i dont notice a wobble in any of my Bees.....go figure