Maybe it is just me, but I can't fault Motiv for appealing the decision. I really doubt there was intent to deceive USBC by producing balls out of spec on purpose after the balls were originally slated as approved.
At what point do you scratch the appeal? It must have been known USBC wouldn't make a decision on the appeal till now based on the projected ball delivery by Motiv. USBC had Bowl Expo, US Opens and other summer related schedules that must have precluded them from being able to decide on the appeal. If it was such an open/shut case, then why even deliberate the appeal?
If you feel Motiv did you wrong and you don't want to support them, that is your decision. If you feel Motiv did others wrong and you don't want to support them, that too is your decision.
But the only people who should be making the decision of what is to be done is Motiv.