Starts with leader moving to the back — that's a nice touch (6)
I believe the answer is:
caress
'touch' is the definition.
(caress is a kind of touch)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for caress that I've seen before include "Stroke lovingly" , "pet[s]" , "Tenderly stroke" , "Stoke affectionately" , "Gentle affectionate stroking" .)