Personally I doubt I would ever get a spider because I don't think it's great to breed them. They definitely look cool and most of them don't seem to have major issues but we really don't have a great understanding about what snakes are actually feeling/capable of feeling, so I am personally erring on the side of not wanting to risk it. Given that reptile cognition is not well understood at all I think that not being that worried about spider is also a perfectly defensible position.
I do want to say that based on what I have read, the genetic mutation that causes spider is the same one that causes the wobble, so it's not something that can be bred out. The hypothesis was that the spider mutation alters the precursor cells that later become both pigment cells as well as neural cells, so you might have varying patterns and levels of neural problems in different individuals, but it would be determined basically randomly. There's not any way to ensure that spiders that you produce will have low wobble, and you will always run the risk of producing high wobble animals.