Run away from (rudely snub) Harlem Shuffle (7)
I believe the answer is:
shamble
'shuffle' is the definition.
('shamble' can be a synonym of 'shuffle')
I don't understand how the rest of the clue works.
(Other definitions for shamble that I've seen before include "Move shufflingly" , "Shuffle along awkwardly" , "Shuffle - butcher's market stall" , "Move awkwardly" , "not the way to walk up the aisle!" .)