Okay, that's weird, suspicious or wily. Wily in the sense that he wanted his assistant to get the job and "retired" this close to the beginning of the season so she would get it? Looks like Elzy spent 9 years as an assistant coach to Mitchell, so maybe it was a loyalty move. Maybe.
The recovery from his surgery was more complicated than expected but surprised it was enough to cause him to retire.
Nobody was questioning his intelligence. I’d guess it wouldn’t be too tough to get a release from the NLI if the player pushed hard.