Managed some - I'd organised shuffle (9)
I believe the answer is:
randomise
'shuffle' is the definition.
(I've seen this before)
'managed some i'd organised' is the wordplay.
'managed' becomes 'ran' (I've seen this in another clue).
'organised' is an anagram indicator.
'some'+'id'='someid'
'someid' is an anagram of 'domise'.
'ran'+'domise'='RANDOMISE'
(Other definitions for randomise that I've seen before include "set up unsystematically" , "Shuffle" , "Destroy order of" , "Dire moans (anag.); make unpredictable" , "Haphazardly set up" .)