This is well OTT. He made one stupid challenge, showing his frustration with the way things were going. A red card and three match ban should be the end of it. At Watford last season I was a few yards away when he was almost cut in half by just as bad a tackle. He had a poor match and we were never going to recover, even at 1-0 down IMO.
And he was sent off at 2-0, as Bmuff were toying with awfully outclassed opponents.