If a traveller decides to return part way through his journey, can he still shorten his prayers on his way back?

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Check below answers in case you are looking for other related questions:
His job is in one country and his home is in another. Where does he avail himself of dispensations (in prayer etc.)?
Ruling on joining ‘Asr prayer to Jumu’ah prayer

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Related Answers:
They are travelling to a European country and there are 15 of them; should they pray Jumu ‘ah?
Prayer of those who are waiting to depart or just arriving
Returning after traveling a short distance and shortening the prayer
His job is in one country and his home is in another. Where does he avail himself of dispensations (in prayer etc.)?
Ruling on joining ‘Asr prayer to Jumu’ah prayer

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