Sloppy guards in one breakout (11)

I believe the answer is:

unorganised

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'sloppy guards in one breakout' is the definition.
I can't judge whether this defines the answer.

'sloppy guards in one' is the wordplay.
'sloppy' is an anagram indicator.
'guards'+'in'+'one'='guardsinone'
'guardsinone' with letters rearranged gives 'UNORGANISED'.

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

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