Retirement was forced on Lawrence after the vitriol he suffered from the fall-out after the Springboks' loss to the Wallabies in the quarter-finals at last year's Rugby World Cup.
It became so heated and personal it was considered far too great a risk for him to referee in South Africa again and so ended his stellar international career.
"It got pretty bad," Lawrence said. "Not really threats on my family as such, there was a concern, but it was mainly aimed at me through social media. On Facebook they launched a 'get rid of Bryce Lawrence' site and it was pretty nasty.
"They were even from middle-aged women and it has carried on since then. It was disappointing to get them from local people in Tauranga who I didn't know.
"To my credit, I didn't reply to anyone until one day I relented and replied to a guy from Papamoa, which I regret because he kept egging me on with more stuff. That was absolutely the reason for my career change.
"I got told at the end of the World Cup that I would have a break from test rugby for the Six Nations and I could totally accept that as there has to be a consequence for poor performance.
"I was told I would be brought back in the middle of this year, as I was ranked in the top three or four referees in the world. But because of the political reaction from rugby unions like Australia and South Africa behind the scenes, they dropped me.
"Sanzar used me but not in South Africa, so eventually they said it was getting tough having you in the draw, because we have to keep making changes to keep you in the system when you are not going to South Africa, so see you later. So I knew I was not able to referee at the level I needed to be re-contracted, really - all because of that one game."
Lawrence is refreshingly honest in his appraisal of his performance on that fateful night in Wellington last year and admits outside pressure was a factor.
"I went into the game knowing it was a massive match and I didn't want to overly influence the outcome and that was in the back of my mind. The way that transpired was I didn't make decisions and if I had my time again I would just go out there and do what I normally do, which is just referee and back myself.
"I had four really good games at the World Cup and then I had that. I had outside pressure from pretty senior people from rugby countries behind the scenes that really created my mindset of lacking confidence to deliver what I normally do.
"There was some pretty nasty political stuff going on about that appointment. I refereed Australia versus Ireland and Ireland had won but behind the scenes guys like [Australian Rugby Union chief executive] John O'Neill were kicking up a massive stink. I knew a bit about that and it was enough to affect me, and it probably made me freeze on the biggest stage," he said.
Lawrence admits that was not the first time he had been affected by external pressure getting to him. "At last year's Super rugby final between Crusaders and Reds there was massive media pressure around me being a non-neutral referee and I let that affect me going into that game. Again, I didn't make decisions and let the outside pressure change what I do."
Lawrence starts his new role in January and will commute to Wellington from his Tauranga base when required.
"It will be a big change, as I have had 10 years basically running myself and now I will be working for the NZRU reviewing, coaching and selecting referees. I am keen to do it but it is something that might just take me a while to find my feet."
