As I said, this thing with Renault telling to stop I think it is another of Horner's bulls**t stories.
He had a part overheating or was close of imminent failure? Let it fail, let the car stop because of the mechanical failure and you will get a clearance from the FIA to replace it under their supervision because you will have 100% clear proof about what happened.
If it is about a potential or a posibility of a part to fail on the way back and you stopped the car to avoid that, then (excuse me) f**k you and get to the back of the grid.