Thanx for the response.
Solution 1: I understand the rod splitting and flaring out. I am not sure if I followed how a screw driver will help bring those pieces together. Though it does give some ideas on trying to shape the top of the rod to get an initial bit through and then hope that the rest follows through.
Solution 2: you are suggesting a way to pull pulling it out brute force. It will become the defector fall back.
If there are any other suggestions I am all ears… I am sure others face this given all the comments of Al swelling once in the water.