A good size CO2 extinguisher would have gotten them too and safer from close up at night.
If you had had the time a call to a fire house might have gotten you a beekeeper or connection to one. Bess are having a hard time surviving GMOs and Nicatoids on crops and pesticides on lawns. A Bee Keeper would gladly came out and collected taken them off your hands. Bees are a valuable commodity.
He would have located the queen and put her in a box and all the other bees would have followed. He may have left the box there for a time to make sure any out rambling came back.