Revelation in tweet set back husband — and then some! (8)
I believe the answer is:
Here is my best explanation:
'revelation' is the definition.
(I've seen this before)
'tweet set back husband and then some' is the wordplay.
'tweet' becomes 'pipe' (both can mean to make a high-pitched sound).
'set back' is a reversal indicator.
'husband' becomes 'h'.
'and then' says to put letters next to each other (I've seen this in other clues).
'some' becomes 'any' (similar in meaning).
'pipe' back-to-front is 'epip'.
'in' acts as a link.