Brute with uncle stirred up a problem when flying? (10)

I believe the answer is:

turbulence

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'up a problem when flying?' is the definition.
I can't tell whether this defines the answer.

'brute with uncle stirred' is the wordplay.
'with' is a charade indicator (letters next to each other).
'stirred' indicates an anagram.
'brute' put after 'uncle' is 'unclebrute'.
'unclebrute' anagrammed gives 'TURBULENCE'.

Can you help me to learn more?

(Other definitions for turbulence that I've seen before include "Disorderly or confused state" , "Disturbed state" , "Upheaval" , "Irregularity in flows" , "that Henry II thought Becket caused?" .)

I've seen this clue in The Guardian.

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