Thanks for the reply HH. I spent a lot of flying time in the back of C-130's in a previous job and when the reverse props came on after landing I always thought the bloody wings were going to fall off......probably the noisiest and bone shaking way to stop there is.
I doubt whether they had chance to deploy the reversers on the 777 as it really did come down to taxiing speed in seconds, without much effort seemingley. I think it may have due to the light fuel load, there can't have been much left after 13 hours. In fact now I think about it, I'm sure an old mate of mine used to fly them, I'll give him a bell and let you know what he said.