Confidential informant releasing red-hot tape (4,6)

I believe the answer is:

deep throat

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'confidential informant' is the definition.
'deep throat' can be an answer for 'informant' (I have seen 'Key informant' mean 'deep throat' so perhaps 'informant' could also mean 'deep throat'). I am not sure about the 'confidential' bit.

'releasing red-hot tape' is the wordplay.
'releasing' indicates anagramming the letters (letters released from their original order).
'red'+'hot'+'tape'='redhottape'
'redhottape' with letters rearranged gives 'DEEP THROAT'.

Can you help me to learn more?

(Other definitions for deep throat that I've seen before include "Secret informer" , "9d [WHISTLE BLOWER]" , "Key informant" .)

I've seen this clue in The Independent.

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