Nooch, I'm very fond of your perspective on such an event....would make even a dull day suddenly fascinating.
Alternators MUST have battery power to keep making electricity - the field windings cannot generate anything without it. Shutting off a disconnect removes that power, and everything then stops.
Generators do make their own power and could keep things running, but with the charging circuitry now facing an open circuit with the disconnect shut off it's hard to see how power will continue to reach the coil....with the result being that all stops.