It is quite remarkable that an arrow can collide into another arrow and run down the shaft. If telescoped arrow is in the bullseye it is commonly called a "Robin Hood". If you get a witness and send in a form the NFAA will document your Robin Hood.
I took a picture and then brought the arrow to my shop to pull it apart and see if I could salvage the shot out arrow. This time I wasn't so lucky and the Gold Tip shaft was not salvageable for my draw length. Oh well, I am in the process of ordering another dozen.