Crack carter without even corruption (7)

I believe the answer is:

crevice

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'crack' is the definition.
(I know that crack can be written as crevice)

'even corruption' is the wordplay.
'even' becomes 'cre' (I can't justify this - if you can you should give a lot more credence to this answer).
'corruption' becomes 'vice' (moral corruption).
'cre'+'vice'='CREVICE'

'carter without' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.

Can you help me to learn more?

(Other definitions for crevice that I've seen before include "Narrow rock fissure" , "Narrow crack" , "Crack or fissure." , "Cleft, fissure" , "Split" .)

I've seen this clue in the Sydney Morning Herald.

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