The next time I feed our female spider I will video it and post. We knew nothing of wobble until someone told us we have a spider and "it has to wobble". If you did not see the pattern on her you would swear she is not a spider as there is not visible wobble at all. She has been hand fed and as of late we let her hunt on her own which she is quite effective at. I wold take a snake like her over one that has not inherent genetic defects but is a problem feeder any day of the week. With all of this said and based on my limited personal experience I would answer you question like this.
1) Wobble is part of the gene. If they have spider they have wobble. You have to look at the gene as more than just a change in pattern as it clearly changes something on a neurological level. With that said, just as no 2 spider patterns are alike I would assume no 2 wobbles are the same either. All have wobble but not all wobble is the same or to the same degree.
2) I do not think it can be bred out through selective breeding as I have heard snakes with little to no wobble have produced very bad cases and snakes with moderate wobble have produced snakes with not visible wobble at all. This does not mean it is impossible, just have not seen any evidence that would correlate degree of wobble to genetic paring. Maybe it can be affected through incubation temps? Who knows..