Which part of the hinge broke? The side on the door or the van side? If you are just trying to get the pin out then yes there is a retaining ring on the tapered side of the pin. If there is no retaining ringand it still won't come outI would spray a bunch of PB Blaster on the pin and then try to punch it out again (giving enough time for the blaster to go to work). If that doesn't work the try applying a little heat before you give it another whack.
Is the pin or hinge bent preventing it from coming out smoothly?
Saw nothing like a retainer, would this be on the tapered side? Could you elaborate on removal of this? The hinge actually broke off the door, so weight isnt and issue. I've spent a solid day on this to no avail, any more info would be great. Thanks