One of the authors/contributors to Cohen's Pathways Of The Pulp was the endo chair at my school. He had obturated on one of my school patients upper canine. The fill went 5 mm beyond. All the other instructors who saw the x-ray became furious on who did the endo until they found out and became hushed. Although not Board settings, the apical stop can collapse. I find many PARL cases has that potential where the apex may be resorbing.
If appealing doesn't black list or hurt you, try the process out. In the mean time, I agree to redo the section.