It cracks me up that everyone is so fast to point out the the markers for pied are not conclusive, yet those same individuals when looking at a clutch of known het pieds probably will seriously consider the strength of the markers. I know it is not a gaurantee, but why does is it seem that the first response is to downplay the significance. Just simply explain it. Done ranting, steps off soapbox.
Anyways to the OP. Your snake has markings that resemble those that the BP community has debated over as het pied markers. The question is would you be happy to produce Pastels? If so, pick up a 100% het pied female and breed it. The worst you can do is normals that are 50% possible het for pied or Pastels that are 50% possible het for pied. The best you may do, (real long shot) is a Pastel Pied. Have fun with it.