Vary its locale after disruption (9)
I believe the answer is:
oscillate
'vary' is the definition.
(thesaurus)
'its locale after disruption' is the wordplay.
'after' means one lot of letters go next to another.
'disruption' indicates an anagram.
'its'+'locale'='itslocale'
'itslocale' is an anagram of 'OSCILLATE'.
(Other definitions for oscillate that I've seen before include "Rock" , "change sides" , "Move to and fro like a pendulum" , "Swing like a pendulum" , "Swing to and fro with lost Alice" .)