What they said. Spotnose and Pastel are both incomplete dominant (called co-dominant among reptile keepers).
There's nothing hidden there...if the animal has the spotnose gene, it's a spotnose. If it has the pastel gene, it's a pastel.
A super-pastel is snake that has 2 copies of the pastel gene, so that ALL of its offspring have to be pastels (because it doesn't have a normal gene to pass to them).

If your snake is a pastel from that pairing, then that's all it is.

Now, if you look into the family tree of that pastel spotnose or super pastel, and discover that some animal in their lineage was heterozygous for something, THEN it might have something hidden in its genome...but the odds are against it.