I have a few spiders, some of the wobble and some don't. I have a bumble bee (pastel spider) and a Jungle Woma spider, neither one have the wobbles at all. I also have a few spider pieds and they all wobble, I think it's just the luck of the draw. Champagnes also have the wobbles. The only thing it really affects is that they can't seem to tell up from down, whatever you do don't put them in a tub of water without constant supervision or they could drown. Other than that they all feed fine and are beautiful animals. These are my spider morphs:
Spider Pied 'White Wedding' female
Spider Pied male
Pastel Spider Pied Female
Bumblebee Pastel Spider pos het pied. pos yellowbelly
Jungle Woma Spider female