Personally, the most striking aspect is what seems to be fairly serious damage to the fuel tanks resulting in a significant fuel leak. Similar scenario to the AF Concorde.
Not something you'd like to see over the middle of the Pond. Good thing this was a ground run and not an in flight occurence. Possibly, the effect of this happening at normal airspeeds would result in a different trajectory for the expelled engine component so not sure if the damage would have been identical.
Looking forward to some comments from people in the know.