The right way is the way that works. Unfortunately you won't know what works until you try...
This is an experimental process...
Some people cannot stomach what that guy did... some people find this terribly disrespectful and incredibly painful.
That article also doesn't cover children... what about if children are involved? Should you be showing them this sort of exercise? Walk all over people because you can get away with it?
Sorry LMW, but this is a very delicate process and there are a variety of approaches, some softball like the example you reference, others hardball.
There is an argument to be made about timing too.
If you can expose this affair and put it to an end in 3 months, or enable the affair to continue, keep it a secret and watch your partner with another man/woman for over a year until it ends.. which would you choose?
There are arguments to be made that the long term battle is far too costly and ending the affair quickly is much more desirable... some argue this does too much damage in the short term...
There is no specific approach or process anyone can confirm 100% will work for you, or for anyone.
There are patterns and hundreds of case studies...
On this forum there is a distinct division between a hardball approach and a softball approach much like the one you quoted above.
There are infidelity experts that argue infidelity is an addiction, and any support for that affair is enablement and NOT helpful at all.
There are many viewpoints, experts, and a variety of case studies...
I tried softball myself for over a year and got nowhere with it... once I started to play hardball and ACT, and bring down CONSEQUENCES for betrayal that's when CHANGE for the BETTER started to happen...
I got ill, very ill... lost 30 pounds (and I only weigh 160 so that's a LOT of weight to lose)...
Right or wrong isn't the question, its what are you prepared to do, and what cost are you willing to expend to end this affair?