Secretly avoid bouncer's family behind Sean Rock (5,2)
I believe the answer is:
sneak in
'secretly avoid bouncer's' is the definition.
I can't tell whether this definition defines the answer.
'family behind sean rock' is the wordplay.
'family' becomes 'kin' ('kin' can be a synonym of 'family').
'behind' means one lot of letters go next to another.
'rock' indicates an anagram.
'sean' with letters rearranged gives 'snea'.
'kin' after 'snea' is 'SNEAK IN'.
Can you help me to learn more?
(Another definition for sneak in that I've seen is " Enter unseen".)