Bring to light calamity, as leaving for home (8)

I believe the answer is:
disinter
'bring to light' is the definition.
(thesaurus)
'calamity as leaving for home' is the wordplay.
I cannot quite understand how this works, but
'as' could be 'in' (I've seen this in other clues) and 'in' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for disinter that I've seen before include "Dig up a dead body" , "Bring up" , "Unearth" , "Dig up, say a body" , "Dig up something buried" .)
