Flattered by their regular removal from corrupted (8)
I believe the answer is:
adulated
'flattered' is the definition.
(adulating is a kind of flattering)
'by their regular removal from corrupted' is the wordplay.
I cannot quite understand how this works, but
'by' could be 'at' and 'at' is found within the answer.
'from' could be 'e' (I've seen this in other clues) and 'e' is found in the answer.
This may be the basis of clue (or it may be nonsense).
(Other definitions for adulated that I've seen before include "given excessive praise perhaps" , "Praised" , "Flattered in an obsequious manner" .)