The drone would then try and re-enter the hive and the scenario would be repeated until the drone got the message (or was too exhausted to try again).
Drones are dependent on the workers to feed them, so if they are not getting fed, they will quickly expend their energy by trying to get back into a colony which is either going to kick them back out or not feed them even if they manage to slip back in.
What does this mean? It means a shift in brood production is taking place and the colony is devoting its resources to the "winter" bees who will keep the colony alive during the coming winter.