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if you are going to throw it out, i will have it. happy to pay post. let me know

if the spindle and depriming pin were misaligned, the pin would have hit the web and broke off, it is hardened steel.
if the spindle were aligned corectly, but protruding to far, the pin would have...

when it bent sideways the pin poking thru the flash hole would have acted like a hook and then pulled the spindle out.

if, at the top of the stroke you are trying to drive the expander ball thru the bottom of the case, it will require a lot of force.
i use that exact set on 2 long range target rifles, myself and my...

you have bottomed out the depriming pin, look how far down its set.
when you repair/replace the pin run it up the die about 5 or 6 turns higher so it just pops the primer at the top of the stroke...