The most common and most likely answer to this crossword clue is the 6 letter word EVADED
I've seen this crossword clue in The Daily Telegraph
E
V
A
D
E
D
More clues leading to the result EVADED
Buddy explains!

The straight part
We know that "sidestepped" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sidestepped = evaded.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 EVADED mean?
EVADED verb- To get away from by cunning; to avoid by dexterity, subterfuge, address, or ingenuity; to elude; to cleverly escape from
- To escape; to slip away; — sometimes with from.
- To attempt to escape; to practice artifice or sophistry, for the purpose of eluding.