I've been met with lots of raised eyebrows in India when doing turnarounds, and lots of disbelieve in why anyone would want to immediately return to where they came from. But in the end, they've always allowed me to transit, provided they have the facility. If they had a rule that transit passengers had to be going to a third country, and not returning to the same country they came from, then there's a good reason for them to deny the transit. If not, I think it's more likely they'll simply check with their supervisor, and you may need to explain the situation several times, but in the end they'll likely allow the transit. Especially in this case where there's a more reasonable explanation for the turnaround, rather than the incomprehensible term "mileage run." Of course, without any reports of anyone trying exactly this, who's to know for certain.