Sean,
did that clutch have any extremes while incubating(i.e. too wet, too hot, too cold)? I ask that becasue extremes in incubation or "egg stress" have been known to create extreme looking snakes that aren't truly genetic(I believe that is what happened to the Halo clutch that Cue had a couple years ago). Judging from the developement of those snakes, I would say that they died at around day 32 - 34. Were the eggs slightly firm at all when you cut them? I ask that also, to estimate when the eggs went bad.

I am not implying that you not try the breeding again next year, because there may be something going on with the female, but I always like to try and figure out exactly what is going on, especially with eggs.