Geordan Murphy has performed a u-turn on his weekend comments that rugby had ‘gone too politically correct’.
The former Ireland international is now interim-head coach of Leicester in England’s rugby Premiership and on Sunday he was upset when one of his players was sent off following a high challenge.
But he has since had a change of heart, saying that he allowed emotion to cloud his judgement.
"I felt in myself that it might seem as though I was taking a head injury lightly and that is not me in any way," Murphy said.
"Looking back, I feel that my comments might have belittled the laws and that was not my intention. It was a little bit of emotion."
Will Spencer was sent off for a high tackle on Tommy Taylor in Leicester's defeat to Wasps.
A disciplinary hearing on Tuesday night approved the red card and gave Spencer a four-week suspension, insisting it was a "reckless tackle that resulted in direct, forceful contact to the head".
The incident has divided opinion among those who view it as evidence of rugby being stripped of its confrontational appeal and the opposing camp who believe every effort must be taken to protect the players.
Concussion's pivotal moment arrived during the British and Irish Lions' third Test against Australia in 2013 when George Smith was knocked out, wobbled off the pitch and then returned to the field.
Murphy believes Sunday's sending-off at the Ricoh Arena, that has generated extensive debate, could prove equally transformative.
"The decision made and the course of the incident have been massively influential across the whole world of rugby. It's polarising," Murphy said.
🗣 "We have a responsibility to tackle low."— Rugby on BT Sport (@btsportrugby) September 16, 2018
"He's 6 foot 7!"
🗣 "We have to protect the players. It's a red card."
"Rugby's changed! Rugby's changed!"
Will Spencer was shown a red card for a high tackle, but not everybody agrees...
We haven't heard the last of this one 👀 pic.twitter.com/ynedwRAflU
"I've had messages from both sides of the debate. I think it's going to be influential across the game, people are going to talk about it, World Rugby are going to send pictures out about it. Hopefully it will make for a safer game.
"It could well be (a watershed moment). We all have to accept the bigger picture. Rugby has changed, for the better."
Guided by research, World Rugby has launched a crackdown on the tackle height to reduce the growing number of head injuries.
Any challenge to the head is an automatic red card and it is hoped the zero-tolerance policy will address the greatest single threat to player safety in a sport that is becoming increasing attritional.
"It's a big statement from World Rugby. The statistics show that that tackle is the one that is more likely to lead to concussion," Murphy said.
"The change is a really good policy - the bodies who make it are not changing rules for the sake of changing rules, they are doing it for player safety.
"We're on board with that and hopefully we can just see that consistency across the board in all Premiership matches and in all decisions. So when we see contact with the head, okay, it's an easy decision."