Dudster. Welcome to the Forum. You may try this. Hold the slide back as far as you can and take a wooden dowel and insert down the barrel as far as it will go and tap the extending part of the dowel with a hammer, not hard, but hard enough.
This will be tricky as you are holding the gun with slide back with the left hand, say, and inserting the dowel with the other hand, while then reaching for the hammer and tapping the dowel. This may give you the 1/8" you need to get the pin out. The dowel should be small enough to fit inside the jammed spent rd as you are going to be tapping the spent rd.
Don't have any experience doing this, or what caused your problem, just thinking of a way to get you that clearance you need to remove the pin.