Yeah there are so many variables that its hard to make general predictions beyond:
Long term situation not the best.
Follow on with infertile eggs likely bad
Follow on with fertile eggs slightly better.
I've had one snake expel eggs retained over a year. The rest required interventions. If my recollections are correct, that was only about two other animals. I am generally able to get the eggs passed as soon as I realize there is a problem. Waiting is not a good idea. Just my two cents but any snake that doesn't pass its whole clutch in 24 hours is having a problem, after 48 its serious and much past 72 your options start to disappear.
As an aside, my comment about full disclosure was just that, a comment. It was not intended to be am accusation.
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“Nothing is at last sacred but the integrity of your own mind.” Emmerson
