As bouncers edged, rubbish openers helping slip (10)
I believe the answer is:
aberration
'slip' is the definition.
(I've seen this before)
'as bouncers edged rubbish openers helping' is the wordplay.
'openers' indicates taking the first letters.
'helping' becomes 'ration' (a ration is a serving or helping).
The first letters of 'as bouncers edged rubbish' is 'aber'.
'aber'+'ration'='ABERRATION'
(Other definitions for aberration that I've seen before include "Straying" , "Wandering" , "Deviation from the accepted norm" , "instability" , "Unwelcome deviation from normal" .)