No way would I breed this snake nor your pastel. I would not even sell them to anyboby just in case one day they decided to breed them.
There is only one way to find out if it's genetic and that is to breed them, I would not chance getting that line out to unsuspecting buyers.
IMHO if I were to find out a collector had bred a kinked animal, I would never by 'any' animals from them, ever.
I produced my first ever double morph this year, the only one out of 2 clutches, and she was beautiful. Unfortunately she had a nasty kink. I decided under these circumstances that she be euthanized.
If your goal is for a healthy future population of animals and not so much a monetary gain, the decision would be easy.