Crossword Genius

Showing great energy, take sides in another upheaval (2,3,4)

Ross

I believe the answer is:

on the tear

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'showing great energy' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'take sides in another upheaval' is the wordplay.
'sides' says to hollow out the word (remove centre letters) (only the letters on the sides are used).
'in' is an insertion indicator.
'upheaval' indicates an anagram.
'take' with its centre taken out is 'te'.
'another' with letters rearranged gives 'onthear'.
'te' placed within 'onthear' is 'ON THE TEAR'.

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I've seen this clue in The Guardian.
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