Florida witch doctor exorcising a bully (8)

I believe the answer is:

flashman

I'm a little stuck... Click here to teach me more about this clue!

'bully' is the definition.
(I've seen this before)

'florida witch doctor' is the wordplay.
'florida' becomes 'fl' (abbreviation).
'witch doctor' becomes 'ashman' (I can't explain this - if you can you should believe this answer much more).
'fl'+'ashman'='FLASHMAN'

'exorcising a' is the 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 flashman that I've seen before include "Bully" , "Bad guy from Tom Brown's schooldays" .)

I've seen this clue in The Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.