They do say an elephant never forgets. It's possible that after stomping through the fence and releasing all the bees the elephant simply continues to charge in

They do say an elephant never forgets. It's possible that after stomping through the fence and releasing all the bees the elephant simply continues to charge into the field. But once the elephant is shooed out of the field, the next time it considers entering, it will remember the bees and might reconsider. It's also possible the elephant doesn't stomp through the fence, but simply meanders toward it until it feels the wire. After which some of the bees come out and the elephant simply decides to not break through the wire and to instead return from where it came.