Nope. Quintana is still eligible for the young riders jersey. Froome at that age was hanging on to motorbikes to get over the climbs.
Oh that's right, I forgot, I've read this part of Froome's book and he explains what really happened that day. See, he had a knee injury and about 200 different diseases and illnesses all at once, and it was too cold and there were too many flat stages and he really really didn't want to hold onto the motorbike, he wanted to climb to the top himself, because he is a man of honour, but the evil motorcycle man kept looking at him with guilty eyes and practically forced Froome to hold onto the motorcycle, until Froome was so overrun with guilt that he had to stretch out his cold half dead hand and grab hold of the motorcycle.
And even then he was going to tell the motorcycle man - this isn't right, i need to climb to the top myself, but literally the moment he took hold of the motorcycle, there was a dud and sirens started screeching and flashlights went on and from all directions The Carabinieri came in vehicles and helicopters and on foot. And they made a show of arresting poor Froome as if he had done something against the rules of the sport like hold onto a motorcyle. It all happened so quickly the motorcycle man had set him up, radioing his friends the second he managed to finally managed to trick this innocent foreigner to put his hand on the motorcycle
Whatever you say about Froome you can never say he's the type of guy who always has an excuse. Nope, he's the guy who always has about 50 excuses.