As stated, releases stoppage (6)
I believe the answer is:
freeze
'stoppage' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'as stated releases' is the wordplay.
'as stated' indicates a 'sounds like' (homophone) clue.
'releases' becomes 'frees' ('free' can be a synonym of 'release').
'frees' is a homophone of 'FREEZE'.
Can you help me to learn more?
(Other definitions for freeze that I've seen before include "Stand motionless" , "Suddenly stop absolutely still" , "Change liquid to solid through cooling" , "Hold at fixed level - say prices" , "Solidify with cold" .)