Pull down stand, mile off (9)
I believe the answer is:
dismantle
'pull down' is the definition.
('dismantle' can be a synonym of 'pull down')
'stand mile off' is the wordplay.
'off' indicates an anagram.
'stand'+'mile'='standmile'
'standmile' anagrammed gives 'DISMANTLE'.
(Other definitions for dismantle that I've seen before include "Undo" , "Take to pieces" , "To demolish" , "Unrig" , "Take apart" .)