Splendid council worker demoted a recluse? (5,5)

I believe the answer is:

greta garbo

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'recluse?' is the definition.
I know that 'recluse' relates to this answer.

I don't understand the rest of the clue.

(Other definitions for greta garbo that I've seen before include "Old actress" , "See actress" .)

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

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