Let's run with that possibility a bit.Or maybe he knows a thing or 2 more about the team than we do.
There's a distinct possibility that Legace became too much like the manager that wants everyone to like them. So much that they can't hold their direct reports accountable or say what needs to be said because his relationship is familial instead of supervisory. The galvanization that must have occurred after the Kivi accident could have played a role in this (possible) blurring of the lines. We'll likely never know.
So replacing the goalie coach, and getting Tarasov back healthy (if he can stay that way), MAY be an example of a possibility like that you described. So maybe? We'll find out soon enough.