Yesterday, ExWeb reported that Yannick and Stephane actually had to be evacuated from Annapurna after suffering frostbite on the descent. The details still remain scant but it appears that they struggled on the way back down but were able to reach Base Camp. Once there, it was determined that they would need medical attention and the duo were flown back to Kathmandu, where they are reportedly being treated now.
ExWeb speculates that the injuries weren't particularly serious, although it is sometimes difficult to tell with frostbite, particularly early on. Hopefully Yannick and Stephane won't be losing any digits and they'll be back in the mountain soon. Considering how dangerous Annapurna can be, they should feel fortunate they got away with just a little frostbite.
They are due to return to France sometime in the next couple of days.