Order for partner to leave? Go, as real ale pint is spilled (5,10)

I believe the answer is:

legal separation

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'order for partner to leave?' is the definition.
I can't tell whether this defines the answer.

'go as real ale pint is spilled' is the wordplay.
'is spilled' indicates anagramming the letters.
'go'+'as'+'real'+'ale'+'pint'='goasrealalepint'
'goasrealalepint' with letters rearranged gives 'LEGAL SEPARATION'.

Can you help me to learn more?

(Another definition for legal separation that I've seen is " Q: Why do we live apart".)

I've seen this clue in The Guardian.

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