The story I heard was that the original spider was imported by CalZoo and sold by Super Pets to Kevin of NERD in 1989. I've not heard of another one being imported since. However, after being unveiled as genetic in 1999 decedents of that original spider have been outbred for many generations. Being a dominant type mutation and with male spiders having a reputation of growing fast and breeding early it's not out of the question that there could be some close to 9th generation spiders out there (maybe more realistic at least 5th). After that much outbreeding the fact that spinning is still around tends to indicate that it's just a side effect of the actual spider mutation and not a separate gene that can be outbred. Because spider numbers can be increased quickly by breeding young spider males to multiple normal females as the morph expands from collection to collection the average spider today might be more outbred than the average wild caught ball python.