Actually I popularized that method back in the early seventies(before suitable nesting was developed) Its far easier to decrease the density of the leading egg, on the female, then wait and hope.
It appears eggs absorb water as they pass out of the female. At times when ovideposition is delayed, the eggs swell, starting with the leading egg. This prevents the female from being able to pass the eggs. Just by decreasing the density and related size, the female then can pass all the eggs without incident.
One only has to use a little common sense. I isolated the problem egg and went in from the lower side. In this area there are no veins and not organs to injure. Also by the time the female lays, there is no fat bodies to obstruct the positioning of the egg. In the many times(I too was a bonehead, about nesting) I never had a problem nor did I have to suck out more then one egg.
At the time Vets cut and removed eggs, they said I was nuts, now Vets do this as common practice, or at least many do and they all should(not all vets are created equal) Some are like current keepers, they dwell in the dark ages, hahahahahahaha. But not Tom. Cheers