Thanks for the detailed information on this odd incident. I'm proud of and very grateful for the robust response of all the devs and witnesses to get this patched as soon as possible. I'm left with an even greater confidence in the integrity of the STEEM blockchain.

P.S. Off topic (and nitpicking), meet my good friend the em dash: (—) It looks more streamlined and professional than using two hyphens where you want long dashes.

When the scheduled power down occurred, witness nodes were unable to process the transaction—and all subsequent transactions—due to the aforementioned rules.

A minor detail, maybe... but somebody had to be that guy ;-)