Straightening out tin mangle (9)
I believe the answer is:
alignment
'straightening' is the definition.
(I've seen this in another clue)
'out tin mangle' is the wordplay.
'out' indicates anagramming the letters.
'tin'+'mangle'='tinmangle'
'tinmangle' anagrammed gives 'ALIGNMENT'.
(Other definitions for alignment that I've seen before include "Collinear arrangement" , "in a row?" , "Dressing" , "Alliance" , "Political side taken" .)