Here's an often referred to thread where the reference to the spider x spider combo clearly states there is no definitive answers yet. It does not claim "fact" one way or another.

http://ball-pythons.net/forums/showt...Basic-Genetics

Quote Originally Posted by OhhWatALoser View Post
...., but it was a rumor that should of ended a long time ago.
If Kevin only has two clutches that have thrown all spiders...this says he hasn't been trying (or looking) for a super for all that long...so why should we have had an answer years ago?

Personally, I've always been a tad surprised that more people haven't tried and proven it out before this...but it is what it is...for whatever reason, even IF someone has a known super-spider, they have not showered the 'Net with proof of it. So why should we have all known this so long ago?