Oh, don't get me wrong, I love spiders too, and if it turns out they all wobble, that doesn't lessen my liking for them.
I'm just saying, because we DO have people saying "None of my spiders wobble, and none of their offspring do either", it's hard to be sure what the truth is, yet, regarding the wobble.
We don't yet know if it's inextricably linked to the spider gene. Some people have been trying to get rid of it--but a (probably) larger number aren't trying.
What's more, I'd bet anything there are a proportion of breeders who are trying to rid the wobble from their own lines by holding back only non-wobblers, but are still breeding their wobble spiders to produce offspring for sale.

My personal opinion on it is that it might be possible to minimize the wobbling, even if it's tied to the spider gene itself, but that's going to take a while. If it's not tied to the spider gene, we should know that soon enough.