Heat gun or torch on back of head, or heat up a steel road red hot and slide down the shaft into the head to break the epoxy loose.
If you use a torch, short intervals so you don’t jazz up the paint or carbon.
The item you see might be golfworks item BB9013 or CSS.
The head may be what is called a blind bore
See the below from Britt from July 2019
The Callaway FT-5 was not a bore through. If it was, you would see the shaft finished flush with the sole on the heel side of the sole. From the images I have looked at and from what I remember there is not a FT-5 driver that is a bore through. You do have to be careful reshafting the FT-5. A lot of carbon in that head, so heating must be done gradual and slow with a heat gun when removing the shaft. Also, the FT-5 originally took a .350″ tip shaft. Not any of those readily available. So, if you are putting a .335″ shaft in, you will need the BB9002 Callaway shaft adaptor. If you happen to have a .350″ tip shaft that you’re installing, you will need the CSS Callaway shaft adaptor.