Fast dog - sudden move - about to return (7)

I believe the answer is:

lurcher

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'fast dog' is the definition.
'lurcher' can be an answer for 'dog' (I've seen this before). I am not sure about the 'fast' bit.

'sudden move about to return' is the wordplay.
'sudden move' becomes 'lurch' (I've seen this in another clue).
'about' becomes 're' ('re' means regarding or about).
'to return' is a reversal indicator.
're' in reverse letter order is 'er'.
'lurch'+'er'='LURCHER'

Can you help me to learn more?

(Other definitions for lurcher that I've seen before include "walking is awkward for such a person" , "a hunting animal" , "mutt" , "incapable of steady gait?" , "A greyhound cross" .)

I've seen this clue in The Independent.

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