Line meandering in sandal a clue to what left it? (4,5)

I believe the answer is:

land snail

'a clue to what left it?' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'line meandering in sandal' is the wordplay.
'line' becomes 'l' (used when specifying particular lines from a poem).
'meandering' indicates anagramming the letters.
'in'+'sandal'='insandal'
'insandal' is an anagram of 'andsnail'.
'l'+'andsnail'='LAND SNAIL'

I've seen this clue in The Independent.

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