Get rid of trademark, being energetic person (9)

I believe the answer is:

firebrand

'being energetic person' is the definition.

'get rid of trademark' is the wordplay.
'get rid of' becomes 'fire' (as in firing from a job).
'trademark' becomes 'brand' (I've seen this before).
'fire'+'brand'='FIREBRAND'

(Other definitions for firebrand that I've seen before include "Rabble-rouser" , "One who stirs up trouble" , "Troublemaker" , "Agitator" , "Energetic person often fomenting trouble" .)

I've seen this clue in The Times.

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