What gets me is that this referee is supposed to be Premier League quality, which illustrates what a shambles must go on there.
He's probably not used to real football!
This may sound ageist, but he's 28 years old, and I am not convinced that a referee has sufficient experience to handle a game like yesterday, where so much is at stake. Having said that, I have seen enough older referees, who have performed equally as badly.
As I have said before, pitch brawls all originate with the referee not getting a grip, and getting the players to trust that he is making fair and equal decisions.
One sided and poor decisions gradually stoke up players' anger and frustration, which eventually spill over.
Most linesmen never fulfil their roles as Asst. Referees as you rarely seem them helping the ref for fouls/niggles he has missed. They just seem to point out the obvious throw-ins and offsides. What's the point of the microphone system if they don't communicate with each other!