Crossword Genius

With a stupid grin, drunk, is creating turmoil (10)

Ross

I believe the answer is:

disrupting

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'creating turmoil' is the definition.
I can't tell whether this defines the answer.

'with a stupid grin drunk' is the wordplay.
'with' says to put letters next to each other.
'drunk' indicates an anagram.
'stupid' next to 'grin' is 'stupidgrin'.
'stupidgrin' anagrammed gives 'DISRUPTING'.

'is' acts as a link.

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I've seen this clue in the Evening Standard.
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