Ask Corey Woods what the big deal is.
He got a spider in for a breeding arrangement a few years back that he was told was a great spider and ready to breed. The thing couldn't move much less breed. It sat in the corner of the tub with it's head and body distorted.
I don't agree with breeding spiders that have a signifigant, noticeable wobble. Granted wobblers can appear in a clutch from non-wobblers but why not use the best animals for breeders and leave the really bad wobblers out of the gene pool?