The most common and most likely answer to this crossword clue is the 5 plus 5 letter word TAKEN APART
I've seen this crossword clue in The Daily Telegraph
T
A
K
E
N
A
P
A
R
T
Buddy explains!
The straight part
We know that "Accepted a role/severely criticised" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case accepted a role/severely criticised = taken apart.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.