For Gods sake. He declared an emergency. Be it a Pan or a Mayday. Who cares! One engine operative on a two engine aircraft IS an emergency. He may not fall out of the sky but he did want some assistance. Captains choice. None of you were there, so you are not well placed to comment.
If anyone on this site did know anything, they would know that he had been in constant contact through maintrol and between them, they had taken the best course of action to protect a very valuable piece of kit.
I think if we were to analyse how many engine failures declare a Mayday or a Pan, I know where I would put my money. Yet again, too many folks postulating without knowing all the facts.
They put the machine on the ground, all happy, all safe, JOB DONE!