I see they are approaching Wiesbaden now, on their way back home. You do feel for the poor sods who may have saved all year for a nice Xmas in the sunshine in Mexico.
Many years ago, I was travelling Jeddah/LHR/New York and was on a VC10 flight. The flight was delayed to allow for people who had been on a BA 747 flight to the US which had turned back somewhere over the South West with one engine fewer than it should have had.
The sad thing that day was the date: Christmas Eve!
Still, even after taking a couple of bodies from that flight, the VC10 left with a grand total of 27 people on board, including the crew!
A brilliant flight!
Oh, and to make it better, the young lady sat behind me prior to leaving Heathrow tapped me on the shoulder and insisted I join her for the trip.