Hot when entering home having vacated theatre hurriedly (2,5)

I believe the answer is:

in haste

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'hurriedly' is the definition.
(synonyms)

'hot when entering home having vacated theatre' is the wordplay.
'hot' becomes 'in' (both can mean fashionable).
'when entering home' becomes 'has' (I can't justify this - if you can you should believe this answer much more).
'having' is a charade indicator (letters next to each other).
'vacated' means to remove the middle letters (internal letters vacate the word).
'theatre' with its middle taken out is 'te'.
'in'+'has'+'te'='IN HASTE'

Can you help me to learn more?

(Other definitions for in haste that I've seen before include "Hurriedly" , "''Marry . . . . . . ., repent at leisure'' (2, 5)" , "Rashly (how not to marry?)" , "Quickly" , "Rushing round" .)

I've seen this clue in The Telegraph.

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