What are your thoughts on the events of today's stage in Ventoux? Tweet us at #bbccycling

Dominic: What happened to the unwritten (etiquette) rules of the peloton why did they not stop racing? 

John: Simple - they should give Froome & Porte the same time as Mollema.

Andy: surely they must stop the race when the leader crosses the line and award the gaps as they were then otherwise not fair

Here's video of Chris Froome jogging up a mountain - just in case you thought I'd established one big massive ruse for the last 45 minutes.

If you're using the BBC Sport app, you'll need to click the link.

Any other day, Adam Yates taking possession of the yellow jersey would be huge news.

But the Briton has had his moment swept away by farce.

We still don't know if the result will stand and if in fact Yates is the GC leader.

Image source, Getty Images

This is the sight of the yellow jersey wearer on the Tour de France running up Mont Ventoux.

It will forever be one of the most remarkable images in sport.

What do you think of this dramatic stage of Le Tour? Tweet us at #bbccycling

Chris Johnson: The commissaires HAVE to do something. An absolute shambles. Other riders should have waited and neutralized finish though?

giles brooks: Makes the TDF appear farcical! 

Sejanus: Tdf reduced to whacky races. If commissaires don't neutralise finish it's become a farce

This may be a farce - but the sight of Chris Froome running up Mont Ventoux has given ammunition for some memes.

This tweet shows the moment Richie Porte crashed into the back of the motorbike - if you're using the BBC Sport app, you won't be able to see it.

Thomas de Gendt, who has achieved a remarkable stage win today, has been presented with his prize on stage.

No yellow jersey presentation yet... I imagine there are many Le Tour officials quickly trying to work out what on earth they are doing.

More from Richie Porte: "That can't stand. It can't happen like that. There has to be some sort of discretion. If you can't control the crowds what can you control? It's not the motorbike - the crowd are in your face the whole time, pushing riders."

Richie Porte on the crash: "I went straight over the top of the bike. It was a mess. The guys went straight into me. I don't know what they're going to do - they have to do something because it's not fair."

Richie Porte has just been speaking to the media. He's not happy.

I've jotted it down - with you in a second...

Rob Hayles
Former GB cyclist on BBC Radio 5 live

It has implications for everyone. It could happen to any rider from any team. Could they giver Froome the same time as the guys he was with or the group he left behind? It’s a complete mess. Thankfully it's not my job to make the decisions.

The issue of fans getting too close to the action has been a nuisance so far in this Tour.

Today it became an all-out problem.

The motorbike colliding with a spectator has caused chaos.

Here are the yellow jersey standings after that farce.

It's all extremely provisional - but as it stands Adam Yates leads the Tour de France and Froome is sixth.

Image source, Le Tour

So, the rule of everyone being given the same time in the last 3km - even if they fall - does not count on mountain finishes.

Tour de France officials could yet decide they need to intervene.

Bauke Mollema gained 1min 40secs on Chris Froome amid all that madness.

He was 56secs behind Froome - so the Briton loses the yellow jersey.

Just trying to work out who the new GC leader is - it could be Adam Yates.