After farming three Abras, I checked their stats in storage. Since they were all with neutral natures, I wanted to take away all the three spoons--and I had none, yet, anyway. At this time there were only those 3 sync Abras, each one with a spoon, and one in my team, which I don't think--though, I don't remember--whether it carried one.
After switching an Abra with some poke in team, I took away the spoon. At that point I saw the storage blink--as usual--as if refreshing and the other two dots for held items on the Abras disappeared.