I bite cop wrongly arresting Republican before anyone stirred? (9)

I believe the answer is:

prebiotic

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'before anyone stirred?' is the definition.
I can't tell whether this defines the answer.

'i bite cop wrongly arresting republican' is the wordplay.
'wrongly' indicates an anagram.
'arresting' is an insertion indicator.
'republican' becomes 'r' (abbreviation).
'i'+'bite'+'cop'='ibitecop'
'ibitecop' anagrammed gives 'pebiotic'.
'pebiotic' going around 'r' is 'PREBIOTIC'.

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I've seen this clue in The Telegraph.

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