Backsliding morals having a change of sides in the event (6)
I believe the answer is:
slalom
'event' is the definition.
(slalom is a kind of event)
'backsliding morals having a change of sides' is the wordplay.
I cannot really understand how this works, but
'a' is found in the answer.
'of' could be 'o' and 'o' is present in the answer.
'sides' could be 'll' (an abbreviation for left written twice) and 'll' is located in the leftover letters.
This may be the basis of the clue (or it may be nonsense).
'in the' is the link.
Can you help me to learn more?
(Other definitions for slalom that I've seen before include "Winter Olympic event" , "Windy skiing event" , "Skiers' obstacle race" , "Downhill race over a winding course on skis" , "Downhill skiing race" .)