When I arrived yesterday I saw quite a bit of this going on, 4-5 times - worker bees literally tumbling out of the hive entrance dragging a seemingly bewildered drone with them.
I feel a bit sorry for the Drones.
They're not aggressive - they cannot sting - as they have no stinger.
What a job they sign up for - come in, mate with a queen once, and die, and if he doesn't get to mate by the time winter arrives, maybe because he was born just a little late in the season, there's a good chance he'll get kicked out of the hive by the very same nurse bees that helped care for and feed him throughout his short life.
Thank you, and blessings to you Drone bees for your service to the greater whole of the colony.