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It matters not who the referee was in a public forum, nor the players who were the culprits or victims.
As for swearing at his own players. Standing next to the ref on the 22m line whilst the rest of the team is in goal is a little extreme in distance to be talking to his own players, and secondly, if you are talking about a referee, or their decisions in an abusive way and they can hear it. Expect a red card. Who you are talking too matters not.
I take the comment about the team normally being good at face value and ask then what made them implode? Why did they react this way.
Lastly Ecky is right, as refs we get one or two games like this in our careers. Nothing prepares you for it, and nothing grates on your mind afterwards more. It affects your life at home & work for days or weeks after, whenever you stop you remember it and get angry, frustrated or even upset, and in extreme cases, referees walk away from the game. No matter how strong a referee you are, the only thing worse is a crippling or fatal injury in your game. Thankfully I have never had one of those. (Goes to touch wood).
Think before you act guys. Please.