Perhaps it was just sour grapes or maybe some genuine concern for his players safety that prompted Sir Alex Ferguson to speak so openly about his disgust with the actions of Swansea defender Ashley Williams after he saw his side slump to a sluggish 1-1 draw with the Welsh side.
The United boss has called for Williams to receive a hearty punishment after his lead scorer this season "could have been killed" when the ball was pelted at point-blank range into the back of the Dutchman's head and neck.
It must be said of United that they were of a relatively poor standard. They looked sloppy throughout, and despite dominating possession for the majority of the second half, United never really looked like snatching a winner.
Unfortunately though, once again this season, a match involving one of England's elite clubs will be remembered not for the football exhibited, but rather for an incident that happened after the referee had already blown his .
When United star forward Robin van Persie was fouled on the edge of the area, all thoughts should have instantly turned to whether or not Wayne Rooney would be able to slot the ball home and put the tablecloth army back in front.
However, rather than reacting in the manner one might expect of a professional sportsman, Williams took it upon himself to power the ball as hard as he could at the United striker from mere inches away.
Following the contact of the ball onto van Persie's head, the Dutch international seemingly had a mini-meltdown on the pitch, completely losing control of his temper and lunging for the Swansea player responsible with genuine rage.
Eventually, after a swarm of Swansea and Manchester United players were finally able to restrain RVP, the referee called both men over and issued a yellow card to each of them.
In all honesty, it was a single moment of hostility in an otherwise well-mannered match, and as such, the incident had no real bearing on the final result or any other passages that followed.
However, after the game, long-time United manager Sir Alex was more than a little bit peeved off with the referee's decision to only give Williams a booking.
The United boss said (Metro):
The referee has had one of those days where we’re not going to get anything off him.
‘He had a shocking performance today. I know he’s a young referee but I was disappointed in his performance. The Robin van Persie situation is crazy, the referee clearly sees it and van Persie could have been killed.
‘I think the FA have got to look into it, irrespective of the yellow card. He should be banned for a long time because that is the most dangerous thing I have ever seen on a football field for many, many years.
‘It was deliberate, the whistle has gone, the game has stopped and he’s done that right in front of the referee, he could have killed the lad. It’s a disgraceful act and he should be banned for a long time.’
The United boss is clearly fuming over this dangerous piece of play, and he possibly has a right to call on the FA to examine what happened further.
Whether or not they decide to act upon the words of Sir Alex shall come to the light in the next few days.
If the FA does decide to charge Williams with an offence, then the Swansea man could be out for a long while.