It would stop Pardew from being in charge of training, starting eleven, subs, tactics, everything. Sacking him now is a must.
It's far from a must, like. It'll be hard to stomach for a lot on here, but we're better off with a manager than without. Sacking him now leaves us entirely rudderless and could possibly indisputably convince some of the players, who haven't exactly looked arsed recently, that we're on our way down.
If we must get points from our remaining home game then I think he needs to go before that.