You misunderstood, that wasn't what the Mercs said, that is the line the FIA are taking
It has never happened like this in F1 history as far as I can tell, and despite claims to the contrary over some misreading the rules, the race director isn't supposed to make rules up on the spot in the name of sports entertainment. He governs the safety of the event, that's where he can step in and take control. In his own words, this wasn't about that, which is why Mercs have a strong case case if it goes to CAS.
Again, not that I think it'll go that far.