I didn't know where the scaphoid bone was in the wrist. It's the small bone on the thumb side labelled "A" in the diagram below (from Wiki). Found in the "anatomical snuffbox" as wiki describes.
Problem for Soler is he probably can't take a cortisone shot or even heavy painkiller's to help with the pain as it will probably violate doping controls.
I tried to play a world cup qualifying cricket tournament with a broken middle metacarpal (the bone with a "3" on it in the diagram). Waste of time in the end. And I could take local painkillers. You just lose all strength though and it is was impossible to grip the bat properly. Anything that jarred was real painful. Trying to grip the handlebar should be similarly difficult, though a broken hand might be different from a broken wrist... and you have to do it for 5-6 hours a day in the TdF.
I imagine Malkmus experienced a similar thing... but I got a feeling he is a tough SOB...
Did putting the wrist in a cast, like Tyler Hamilton did, help at all Malkmus?
The other problem he would probably have, apart from getting off the seat, would be changing gears and braking on descents.