does he have spector in him, his mom did?

[snakesRkewl]

Maybe I am confused, but of course it can just be pastel, yellow belly by specter is not a homozygous form of anything, its just a 2 gene snake, that means that the parent can pass on either yellow belly, specter, or normal genes, so it certainly can be a normal pastel, or am i wrong here?

Sorry to say but you are wrong.
Superstripes are allelic just like vanilla creams and Crystals and others, so when you breed a superstripe to a normal you get yellowbelly or you get specter, no normals.