I think you kind of missed the point Jon was trying to make - it's not a cinnamon, it's not a het red, even if it has het pied markers it's not necessarily a het pied. If you have papers from the breeder saying it's 100% het pied then great prove it out and you're good to go.
But one should never assume a ball with the markers is an actual het -- it's a normal until proven otherwise -- I have a rack full of normals with black backs and markers that produce more black backs with markers -- it's not uncommon.