I am not into banking but I know that your friend will be able to fly out of the country provided he produces a copy of his Appointment letter as well as a letter from his new employer (in Dubai or wherever)stating that his salary of X amount would be transferred to the SC bank and they could deduct his loan instalment from it.

As Jauntie said, instead of he seeking advice from ppl, he can speak to Standard Chartered and get things confirmed. There is definitely a way out.