The most common and most likely answer to this crossword clue is the 10 letter word DISSEVERED
I've seen this crossword clue in Financial Times
D
I
S
S
E
V
E
R
E
D
Buddy explains!

The straight part
We know that "torn apart" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case torn apart = dissevered.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.
What does DISSEVERED mean?
DISSEVERED verb- To separate; to split apart.
- To divide into separate parts.