I am attaching a cable management tray to the underside of my solid wood desk (acacia). I heard about threaded inserts which are good for when you want to disassemble things frequently. That sounded like a good idea since I plan on moving in the near future and it would be easier to remove the tray from the desk.
So I got a set of threaded inserts and watched some videos showing how you can use a long screw and nut locked up against the insert and then easily drive in the threaded insert with a drill. Here is one of the videos I watched.
However when I tried it the threaded insert went in diagonally and now I don't know how to remove it (see photos below). I tried putting the drill in reverse but it just causes the screw and nut to come out even after tightening the nut to the insert as much as I can. How can I remove the threaded insert? Keep in mind I have a bunch of extra inserts so I don't care what happens to the insert, I just want minimal damage to the desk.