Those pins should come out in either direction. Here is a trick which may help it you have an assistant. Drill a 1/2 hole in the end grain of a 2 X 4 2” deep. It should be long enough by your assistant to hold tightly against the shaft. Position the hole so you can drive the pin into the hole. While your assistant is holding it firmly in place use a drift punch, not tapered punch, to drive the pin out. If you have enough room carefully heat the shaft before starting with a propane torch to slightly expand the metal.