Depinning an audio connector... tools and parts?

Hi all, I have this 8-pin audio connector for my Alpine amplifier. The yellow power cable wiggled loose from its pin, and I have been unable to remove the pin from the connector, despite my best efforts filing paperclip ends into a flat profile to make a depinning tool.

How can I remove the pin, and where could I order new pins (or reuse this one) ? Thanks!

I am located in the UK. Thanks!
 

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