Crossword Genius

To discipline's unusual: there is evidence of disagreement (5,8)

Ross

I believe the answer is:

split decision

'evidence of disagreement' is the definition.

'to discipline's unusual' is the wordplay.
'unusual' indicates an anagram.
'to'+'disciplines'='todisciplines'
'todisciplines' is an anagram of 'SPLIT DECISION'.

'there is' is the link.

(Another definition for split decision that I've seen is " Majority verdict".)

I've seen this clue in The Times.
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