Crossword Genius

Back-stabbing braggart, son a sociopath controlling family (4,6)

Ross

I believe the answer is:

cosa nostra

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'family' is the definition.
The answer and definition can be both groups as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'back-stabbing braggart son a sociopath controlling' is the wordplay.
'back' shows that the letters should be reversed in order.
'controlling' indicates a hidden word (the solution is controlled or contained).
'artsonasoc' can be found hidden inside 'stabbing braggart son a sociopath'.
'artsonasoc' in reverse letter order is 'COSA NOSTRA'.

Can you help me to learn more?

(Other definitions for cosa nostra that I've seen before include "Criminals" , "Criminal element" , "criminal US group" , "US crime syndicate with links to the Mafia" , "The Mob" .)

I've seen this clue in The Guardian.
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