I don't think you can blame anyone but the manager for this. We've all seen what has happened over the past few games, where he has had alternatives to the failing players but hasn't used them, and last Sunday refused to use them. Here they are again, its failing again and theres no sign of him planning to change it. Ergo, he goes.
Brands at least has the excuse that the club / Moshiri aren't using the DoF role in the way it needs to - yes, if we are going to keep doing that then theres no need for him but that isn't his fault.