Letting someone with Locke's personality manage a huge organization is like asking Rogge to review lyric poetry—utterly fatal. That it didn't blow up sooner is all thanks to his sturdy willpower.
Now things are looking up. Someone is willing to take over, someone to secure his position for him, and what's better, these are all veterans from the Resting Palace. Locke couldn't wait to throw in the towel.
He claimed he was going to guard Your Majesty's body and surely, you can't expect him to guard a body while also managing a massive organization in another world, can you?
So, during this past half year, while Ange has been fixing up the Conch Shell here, Locke's been fussing with the Sorcerer Alliance over there. Just waiting for the moment silver coin got the hang of the whole setup, and then he'd high-tail it out of there.