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Journalist, left outside, changed plans (10)

Ross

I believe the answer is:

redesigned

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'changed plans' is the definition.
Although both the answer and definition are past participle verbs, I don't see how they can define each other.

'journalist left outside' is the wordplay.
'journalist' becomes 'ed' (short for editor).
'left' becomes 'resigned' (I've seen this before).
'outside' indicates putting letters inside (some letters go outside others).
'ed' inserted into 'resigned' is 'REDESIGNED'.

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I've seen this clue in The Times.
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