Thanks for highlighting this site.....didn't know of this being available.
I had a quick look at my favourite route in France...not that I had done more than a handful. In Corsica the information for the celebrated route down the spine of the island has perhaps not caught up with the disaster that happened on stage four a few years ago.
The map information/route shows the stage through the Cirque de la Solitude where at least seven walkers lost their lives, some of them still buried under the debris, resulting in a re-routing over terrain very close to the summit of Monte Cintu. A new stage that takes the walkers over an additional 600 metres or so of extra ascending.
I think that it is appropriate that the old stage four terrain is left in solitude.