Terrible deviance of church assistant (4-4)

I believe the answer is:

vice-dean

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'church assistant' is the definition.
I know nothing about this answer so I can't tell whether this works.

'terrible deviance' is the wordplay.
'terrible' indicates an anagram.
'deviance' with letters rearranged gives 'VICE-DEAN'.

'of' acts as a link.

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

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