Shunned promo surrounding video nasty (7)

I believe the answer is:

avoided

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'shunned' is the definition.
(to shun is to avoid or deny)

'promo surrounding video nasty' is the wordplay.
'promo' becomes 'ad' (I can't justify this - if you can you should give a lot more credence to this answer).
'surrounding' means one lot of letters goes inside another.
'nasty' indicates an anagram (a nasty or wrong spelling).
'video' anagrammed gives 'voide'.
'ad' placed around 'voide' is 'AVOIDED'.

Can you help me to learn more?

(Other definitions for avoided that I've seen before include "Missed" , "Steered clear of" , "Shunned" , "Kept away from" , "Eluded or dodged" .)

I've seen this clue in The Independent.

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