Well, the first off spring from the spiders were spinning or wobbling, so I know its not from inbreeding. I like how people say that they believe all spiders spin or wobble, even if you cannot detect it. Do you have many spiders to prove that point? My last spider did not wobble or spin, at eating or any other time. Her tank was right next to my bed so I was able to watch her constantly. She NEVER spinned or wobbled. I have also seen many others that have not. Not during feeding or at night, while drinking or in spite. hfpt( Its getting late...)