Yes, this is likely the case, but the whole thing still seems wonky. Having worked as a para-legal briefly for my Mom who is an attorney (soon to retire), I have noticed that sometimes the courts make decisions that defy reason and common sense in order to stick closely to the "rules of the court." Sometimes those "rules" (and I am not referring to the law), end up getting in the way of real justice. This might be one of those times, but there's almost no way to know for sure without actually being there. Obviously my experiences with the law do not make me an expert by any stretch of the imagination, but are simply meant to illustrate that I have been around it enough to scratch my head sometimes.
I have found that many of the "rules of law" make sense when you look at them individually, but sometimes they can be completely illogical when taken in context of the bigger picture. In this instance, I understand that it is only fair to allow the other side to be able to prepare their defense versus the evidence presented, yet how can one justify leaving this evidence out when it is so important and actually would allow real Justice to be served. I must admit to wondering why they didn't present this evidence sooner...
Regardless, it makes for some interesting drama.