Stator Vane,
It's a shame the captain needed his rest so early in the flight and couldn't have waited until he was North of the ITCZ and clear of the convective weather. No reasonable captain leaves the flight deck during the forecast of convective weather to take a nap while leaving low time crew at the controls.
I've flown down there quite a bit and he could have waited until he was abeam St Maarten and had clear skies from there...and all the way to Paris.
The failure started and ended with the captain!