Twisted and turned system, opened and stripped down (6)

'twisted' is the definition.
The definition and answer can be both to do with motion as well as being past participle verbs.
Perhaps you can see an association between them that I can't see?

'and turned system opened and stripped down' is the wordplay.
I cannot really see how this works, but
'and' could be 'n' (common abbreviation for 'and') and 'n' is located in the answer.
'down' could be 'd' and 'd' is found within the answer.
The remaining letters 'sake' is a valid word which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).

Can you help me to learn more?