Leader in dance is wrong to twist (7)
I believe the answer is:
distort
'to twist' is the definition.
(I know that distort is a more specific form of the action distort)
'leader in dance is wrong' is the wordplay.
'leader in' says to take the initial letters.
'wrong' becomes 'tort' (a civil wrong in law).
The initial letter of 'dance' is 'd'.
'd'+'is'+'tort'='DISTORT'
(Other definitions for distort that I've seen before include "Pervert" , "Warp" , "Twist out of shape" , "turn crooked" , "Deform" .)