Yep the old ground grippers.I think they put the two outboards into reverse at 10ft but I don't know if it helped stop the thing.
As far as RYR goes I think it seems to be more a policy of always carrying the minimum holding fuel,to please the bean counters,rather than a little extra.The number of times that operators arrive not being able to hold for improvements in runway conditions is significant nowadays.I can look at the wx and see that it's going to snow,yet it comes as a complete surprise to some pilots into Aberdeen.