Disastrously late decree commands them to put the brakes on (10)

I believe the answer is:

decelerate

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'commands them to put the brakes on' is the definition.
I can't judge whether this defines the answer.

'disastrously late decree' is the wordplay.
'disastrously' is an anagram indicator (I've seen this in other clues).
'late'+'decree'='latedecree'
'latedecree' is an anagram of 'DECELERATE'.

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(Other definitions for decelerate that I've seen before include "ease up" , "Reduce speed" , "Slow down" , "Move more slowly" .)

I've seen this clue in The Irish Times.

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