I hope the FCC goes knocking on WBZs door and says "Give us back 40,000 of your 50,000 watts between those hours because it's clear that you're behaving like a 10,000-watter anyway."
Actually, as the past week or so have ably demonstrated, 10kW on AM works quite well when you're on a "clear channel" (the frequency, not the company). Hell, as WJIB demonstrates, even 250 watts can work pretty well if it's in the right place and on the right freq.
At least, until the first EAS or Amber Alert at 3 AM is missed, or some big story gets by them (but not the competition).
Just because the newsroom is "closed" doesn't necessarily mean nobody is in the building. Are there still board-ops on the overnights who can wake up the PD/News Director if a newsworthy event happens, and then start doing basic news while the news team is called in?
And hell, I don't know if WBZ has actually done this, but the entire EAS setup COULD be rigged to be operated completely remotely if necessary. With call forwarding and dial-up remote controls, it's not that hard to do.