He's clearly at the end of his tether. He knows he's being let down dangerously by players he has stood behind; DCL, McNeill etc.
I'm pleased to hear what he said because he is speaking with clarity there. He's not ducking responsibility and he's not allowing his players to duck it either. He's rightly furious, because the powder-puff finishing from too many players is endangering the club's status and his job.
Looks like Beto has won his place, though, for now. Sean might reflect - if things go well - that he was too slow to give Beto a chance. But it's early days. Incoming 3-0 defeat at United to get through first. Bournemouth will become a huge game then.