Man overturned resolution in revelation (10)
I believe the answer is:
disclosure
'revelation' is the definition.
(synonyms)
'man overturned resolution' is the wordplay.
'man' becomes 'sid' (man's name).
'overturned' says the letters should be written backwards.
'resolution' becomes 'closure' (I have seen 'Emotional resolution ' mean 'closure' so perhaps 'resolution' could also mean 'closure').
'sid' backwards is 'dis'.
'dis'+'closure'='DISCLOSURE'
'in' acts as a link.
(Other definitions for disclosure that I've seen before include "Laying bare" , "Release" , "Act of revelation" , "revealing" , "broadcast" .)