Takes cover from explosive device in high sun (6)

I believe the answer is:

uncaps

'takes cover from' is the definition.

'explosive device in high sun' is the wordplay.
'explosive device' becomes 'cap' (cap is a kind of explosive device).
'in' is an insertion indicator.
'high' indicates an anagram (can mean drunk or on drugs and hence disordered).
'sun' with letters rearranged gives 'uns'.
'cap' going inside 'uns' is 'UNCAPS'.

I've seen this clue in The Times.

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