Punk, notwithstanding trousers, to get out of bondage (6)
I believe the answer is:
unknot
'to get out of bondage' is the definition.
(bondage can mean being tied up)
'punk notwithstanding trousers' is the wordplay.
'trousers' says the answer is hidden in the clue (to trouser can mean to steal or take).
'UNKNOT' is hidden within 'punk notwithstanding'.
(Other definitions for unknot that I've seen before include "Remove tie" , "Simplify" , "Loosen" , "Untie" , "Free from ties" .)