BA 777 crash at Heathrow

Best guess yet. I hadn't thought of that, but it's a distinct possibility.
A loss of one engine would not be that big an issue at that stage of the
flight, even with full flaps out, but a reverser deployment woud make a ot
of sense from what I've heard about the accident. Thee are a LOT of
safeties on the reversers, but it has happened to airplanes in the past.

Bertie

What happens to pilots of flights that end like this if somebody on
the flight deck engaged the reversers prematurely?

There was that Lauda air business back in the 90s, I recall. Reverse
thruster(s) deployed in flight. Nobody made it.