Drunk hen to flash bust (2,3,5)

I believe the answer is:

on the blink

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'bust' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'drunk hen to flash' is the wordplay.
'drunk' indicates anagramming the letters.
'flash' becomes 'blink' (synonyms).
'hen'+'to'='hento'
'hento' is an anagram of 'onthe'.
'onthe'+'blink'='ON THE BLINK'

Can you help me to learn more?

(Other definitions for on the blink that I've seen before include "out of order" , "Not working properly" , "getting poor reception" .)

I've seen this clue in The Guardian.

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