There is no mechanic to cancel an effect that is currently active. So how do you plan to stop Motti's effect without adding a new rule? We know that it doesn't stop in it's own, because that would cause ships to spontaneously explode.
As far as intent for RF, nobody is arguing the intent. We are discussing what is written. Most are assuming that intent is Mandatory, so feel free to play it that way. That doesn't change that FFG should clarify the card to avoid requiring assumptions.