Got sidetracked (7)
I believe the answer is:
strayed
'got sidetracked' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for strayed that I've seen before include "Went off course" , "Went off violin" , "Wandered (from path)" , "Went off the track" , "Wandered off course" .)