There wasn't much choice! Reverse right down to a halt, then we started rolling, and on came high reverse again, with continual spluttering. Eventually they kept us stationary with low reverse, but still regular surging. I was sat next to number 3 with a grandstand window view. One lost fear of surges (and one's hearing!). Having experienced many 747 surges as well, it appears jet engines like to react violently whenever I'm near- much as many members of pprune! Except for the 737 CFM56s- they are quite boring engines.
Maybe I shouldn't have said that.