The last few issues of X-men have been the Kitty and Kamala show. Those two have been super prominent in the ongoing narrative while Ev has been confined to the sewers. I can definitely see the X-office using this development as a way to sideline Synch. Just say he decided to go away into self imposed exile to mourn Talon and call it a day. Like it has been said, they named him leader but he's done no leading.