Back in control, staggered to welcome cast etc. (9)
I believe the answer is:
reelected
'back in' is the definition.
(I've seen this before)
'staggered to welcome cast etc' is the wordplay.
'staggered' becomes 'reeled' ('reel' can be a synonym of 'stagger').
'to welcome' is an insertion indicator (in sense of 'inviting in').
'cast' indicates an anagram (letters are dispersed or cast around).
'etc' with letters rearranged gives 'ect'.
'reeled' going around 'ect' is 'REELECTED'.
'control' acts as a link.
This may not be right. It may belong to another bit of the clue.
Can you help me to learn more?
(Another definition for reelected that I've seen is " Back in".)