That would be a smooth way to combine our points. You mean that this movie would serve as a prequel instead of a sequel with a few references to the past. The missing mask, instead of Michael Myers himself, could be afflicted with The Curse Of Thor, which would explain why the slasher can't be stopped even though the power behind the Silver Shamrock line has been destroyed. Someone practicing witchcraft for the factory might apply the curse to one mask to ensure that there will be a surviving killer in case if the employees are caught and their control over all of the other children disappears. Halloween III: Season Of The Witch wouldn't be a failure if it had a substantial story, and might even interest fans if it provided a background for Michael Myers.