Company: was leader and main man moved on board? (7)

I believe the answer is:

castled

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'moved on board?' is the definition.
(castling is a move in chess)

'company was leader' is the wordplay.
'company' becomes 'cast' (I've seen this before).
'was leader' becomes 'led' (a leader leads people).
'cast'+'led'='CASTLED'

'and main man' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.

Can you help me to learn more?

(Other definitions for castled that I've seen before include "have moved on board" , "made move in game" , "Moved king into safety" , "Performed chess move" , "Made a chess move" .)

I've seen this clue in The Telegraph.

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