Get in and ruin another way of getting back together (9)

I believe the answer is:

reuniting

I'm a little stuck... Click here to teach me more about this clue!

'getting back together' is the definition.
I can't tell whether this definition defines the answer.

'get in and ruin another way' is the wordplay.
'and' is a charade indicator (letters next to each other).
'another way' indicates an anagram.
'get'+'in'='getin'
'getin' after 'ruin' is 'ruingetin'.
'ruingetin' anagrammed gives 'REUNITING'.

'of' acts as a link.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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