Man making posture, rejecting Church of England (4)
I believe the answer is:
stan
'man' is the definition.
'posture rejecting church of england' is the wordplay.
'posture' becomes 'stance' (stance is a kind of posture).
'rejecting' is a deletion indicator.
'church of england' becomes 'ce' (abbreviation).
'stance' with 'ce' taken out is 'STAN'.
'making' acts as a link.
(Other definitions for stan that I've seen before include "- Laurel, comedian" , "Laurel perhaps" , "guy" , "Ollie's partner" , "- Laurel, Hardy's partner" .)