Spooner's imitation of dervish during dance destroyed partition (6,4)

'destroyed partition' is the definition.
(wall which split Berlin until 1989)

'spooner's imitation of dervish during dance' is the wordplay.
I cannot really understand how this works, but
'during' could be 'in' (e.g. during February means in February) and 'in' is located in the answer.
This may be the basis of the clue (or it may be nonsense).