Cancelling tunnel man dug up (9)

I believe the answer is:

annulment

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'cancelling tunnel man dug up' is the definition.
I can't judge whether this definition defines the answer.

'cancelling tunnel man dug up' is the wordplay.
'tunnel man' anagrams to 'ANNULMENT'.
Though, I am not clear how the anagram is indicated.

Can you help me to learn more?

(Other definitions for annulment that I've seen before include "Invalidation" , "recall" , "Countermand" , "cancellation" , "Declaration of invalidity, of a marriage say" .)

I've seen this clue in The Independent.

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