As mentioned in some of the replies to the Quora question, this was also a great time to mess around in PvP and put on all of your best equipment (armor of invulnerability, and weapons of vanquishing) and head out to the dungeons to cause chaos. Or taking 80+ purple explosion potions with you and hucking them at groups of people still fighting in the dungeons. If you died, oh well, like you said everything that happened in that hour got reverted.