Peter,
Yes, the pins should drive out.
There is a short knurled length (immediately under the head) of the pin which is an interference fit in the top section of the hinge. This is designed to prevent the pin from working loose and the pin/hinge combination is likely to have become seized at that point. A penetrating fluid could help.
Alternatively, it is posible to remove the two doors on one side together with hinges all as one assembly by undoing the two hinge retaining nuts inside the B post. This will give better access to the pins but, once the doors are off, you may no longer want/need to remove the pins.
B…..