Iv just done some research and looked at a Write up NERD have done. It seem ur right. I apologise! I was falsely to that the 1st W/C spider did not wobble and when they started mass breeding them the wobble started.
If u breed two snakes with the spider gene for eg a bee to a spinner blast this will double ur chances of having more server head wobble
This theory has been proven wrong by all the breeders I know (and probably by all the ones I don't know). The wobble is fairly random, and can pop up at anytime, and at any severity level anytime the Spider gene is present.
As long as they eat, shed, and poop, there is nothing wrong with your Spider being a little dingy in the cranium
Thomas "Slim" Whitman
Never Met A Ball Python I Didn't Like