Utterly perplexed when given the heave-ho! (6)

I believe the answer is:

thrown

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

'utterly perplexed' is the definition.
'thrown' can be an answer for 'perplexed' (thesaurus). I'm not certain of the 'utterly' bit.

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for thrown that I've seen before include "Disconcerted, confused" , "Hurled, flung" , "baffled" , "Unseated" , "given up intentionally" .)

I've seen this clue in the Evening Standard.

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