Blowing his top, awkward person makes you jump (4)

I believe the answer is:

lutz

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'jump' is the definition.
(I've seen this before)

I can't explain the remainder of the clue.

(Other definitions for lutz that I've seen before include "Figure skating jump with turns" , "difficult skating manoeuvre?" , "Jump from one 5 down to the other" , "Figure skating movement" .)

I've seen this clue in The Sunday Times.

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