I was under the belief that refitting a structure once reinforced into shield was not available. In addition, it was possible before the latest patch for citadel owners to destroy their own rigs, to spite attackers. This was raised by the CSM and highlighted as fixed in the most recent expansion notes. Since the patch however, we have found more and more empty structures dying, which were previously fitted.
Is this working as intended?
I would like to see no refitting of a structure once any damage has been applied, and that mechanic would hold for 15 minutes unless the attack is stopped. Similar to the mechanic that you cannot re-fit a ship in space with an aggression timer. Ultimately a ‘bling’ citadel can be used to fend off the first attack, right up to 1% shield at which point the owner can drag all the modules off and destroy the rigs, making the killmail hull only.
Below you can find an internal scan of an Athanor. From memory the defender was not online during the initial siege, so it would at least appear he has stripped it between the shield timer and hull. Discuss!