i'm new at this so i'm no expert by any means, but what i've read is that it is the nurse bees that become laying workers. there may even be more than one, but the foragers don't do this. since the nurse bees have never left the hive they won't know how to find it again after you shake them out. you must move the hive a considerable distance away and make sure ALL of the bees are out and then replace your hive. the forager will find their way home but the nurse bees won't. unfortunately you will lose some bees, but it's the only way to be sure. if even one bee is left in the hive, it could be the laying worker and all your efforts would have been for nothing.