Corset set remains in position (5,3)

I believe the answer is:

stays put

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'remains in position' is the definition.
'stays put' can be an answer for 'remains' (I've seen this before). I am unsure of the 'in position' bit.

'corset set' is the wordplay.
'corset' becomes 'stays' (synonyms).
'set' becomes 'put' (synonyms).
'stays'+'put'='STAYS PUT'

Can you help me to learn more?

(Other definitions for stays put that I've seen before include "anchored" , "Remains" .)

I've seen this clue in The Guardian.

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