ya the breeder i bought my spider didnt tell me that he had a wobble, but when u breed so many babies, it must be hard to keep track. also, it seems like the spiders wobble more often when they're stressed.
weird story: my spider had a wobble, but i switched him to aspen (i have no idea y...) and he stopped wobbling o_O.. just hides. i dont think the aspen really has this effect, i just thought it was a freak occurrence lolll. i havent noticed the wobble since then lolz.