I and no doubt others were trying to avoid mention of the gin-bin - doubt it is relevant to a non event, maybe pilot didn't pull brake, maybe chocks were'nt put in - or at least soon enough, Harriers are not known for great brakes for various reasons.
Now you've taken the fun out of it...no-one hurt & the reports of damage to the aircraft seem doubtful -
Try the image of a Harrier in early days breaking free from the engine run pen at full chat, with a Rolls Royce chap on board wearing shirtsleeves & no escape gear, carrying on across the grass until the noseleg broke - now that's an event !