Forgiving Dismissal? (7,2)

I believe the answer is:

letting go

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'forgiving' is the definition.
Although both the answer and definition are present participle verbs, I can't see how they can define each other.

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for letting go that I've seen before include "firing" , "Got tingle, so releasing" , "Relinquishing one's grip" , "Making redundant" , "Releasing hold" .)

I've seen this clue in the Sydney Morning Herald.

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