Destroyed post splitting centrepiece unsettled (7,2)

I believe the answer is:

tripped up

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'destroyed' is the definition.
Although both the answer and definition are past participle verbs, I cannot understand how one could define the other.

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for tripped up that I've seen before include "stumbled" , "Made a mistake" , "Came a cropper" .)

I've seen this clue in The Daily Express.

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