It might just be really stuck. The lower shaft pin only holds the collar in place. The little i.d. circular clip holds the T-bar to the shaft so once that's out and you get the the reluctor off the T-bar will slide out. They are two separate parts. The whole shaft assembly should then drop out.
Put the unit into a vice and make sure the shaft can't rotate. Hit the reluctor with some lube like PB Blaster to see if that will loosen it up. Maybe you just need larger screwdrivers to provide better leverage. Just make sure to use even pressure on both sides and try not to gouge anything. You can put rags on the tops of the housing edges if you're afraid to gouge or mar them but you do need a solid surface to pry on.
Good luck.
