Sandy, also going to hold back in quarrel (6)
I believe the answer is:
'quarrel' is the definition.
(a noisy disturbance)
'sandy also going to hold back' is the wordplay.
'also' becomes 'and' (I've seen this before).
'going' indicates named letters should be taken away.
'to hold' means one lot of letters goes inside another.
'back' becomes 'hind' ('hind' can be a synonym of 'back'**).
'sandy' with 'and' taken out is 'sy'.
'sy' going around 'hind' is 'SHINDY'.
'in' is the link.
(Other definitions for shindy that I've seen before include "racket" , "Rumpus (colloq.)" , "Large lively party" , "disorderly party" , "noisy party" .)