BAR:

I think that is one of the many "codicils" of Murphy's Law".

Like:

The quickest way to find something is to go and buy another one.
Tracer works both ways.
Your (military) equipment was supplied by the lowest bidder.
Incoming "friendly" fire is more accurate than incoming enemy fire.

And so on.

I have ended up with "multiples" of lots of stuff: dies, tools, fasteners, kitchen gizmos; usually bought in indecent haste, because the originals were not quite where they should have been when "urgently" needed.

The "pro-active" side of "multiples is that it is handy to keep a couple of "spare" decapper / expander spindles and decapping pins of the various types and sizes, in the tool cupboard.

Calfed:

As a general point, the decapping spindles can often be fettled back into shape. Pins? Not so much. Check out the Lee decapping system; the "spindle" is not threaded, but smooth and is retained by a top nut assembly that is essentially a "collet". If you try to deprime a Berdan case, the pin is simply forced back up in the collet and not mangled. (Works on all but the most insanely-crimped boxer cases).

And check out Lyman's .22 and .30 cal Tungsten Carbide decapper / expander ball kits; they come with a couple of adapter plugs so they can be used in a wide variety of dies. These seriously reduce "drag' as the ball exits the case neck. Less drag: less stretch and less noise.

On a different tack: I destroyed both a CH and an RCBS primer-pocket decrimper tool, prepping "surplus" brass. Then I coughed up for Mr. Dillon's masterpiece and have never looked back. Only thing I did was to run a small, Tungsten-Carbide centre drill bit into the end of the "large" pocket swager, so that I could do the pockets of the very same Berdan cases that mangle the decapping pins of the unwary.