Crossword Genius

Reindeer herders all ran and sped in a frenzy (10)

Ross

I believe the answer is:

laplanders

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'reindeer herders' is the definition.
I know nothing about this answer so I can't tell whether this works.

'all ran and sped in a frenzy' is the wordplay.
'and' is a charade indicator (letters next to each other).
'in a frenzy' indicates anagramming the letters.
'all'+'ran'+'sped'='allransped'
'allransped' with letters rearranged gives 'LAPLANDERS'.

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I've seen this clue in The Everyman puzzle in The Observer.
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