A score to settle long ago led to disorder (6,4)

I believe the answer is:

golden goal

'a score to settle' is the definition.
(I've seen this before)

'long ago led to disorder' is the wordplay.
'to disorder' is an anagram indicator (a disordered version of the letters).
'long'+'ago'+'led'='longagoled'
'longagoled' anagrammed gives 'GOLDEN GOAL'.

(Another definition for golden goal that I've seen is " score to settle".)

I've seen this clue in The Times.

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