I suspect the bones were in bad shape, otherwise the would have said much earlier that the bones were human and they were simply determining cause and/or manner of death. For them to be unable to recognize the bones as human, in my opinion, means they were either fragments, or burned, or evidently dismembered, or all of the above, to the point of being beyond immediate recognition as human.
On the one hand, it makes me so hopeful about the L/O case, that perhaps their remains will be found and they will be put to rest by their families. It would make the case against the accused that much stronger to have bodies. But sadly, we also know there are many missing, especially missing women. I guess the most we can hope for, if the remains do turn out to be human, is that someone somewhere will finally have the peace of mind that comes from knowing with certainty the fate of their loved one(s) and that they may be given a proper burial.
It is such a horror to me, that these murderers cannot muster up one shred of human decency or remorse, and spare these families the sorrow of never finding the remains of their murdered loved ones. I feel the same way in the case of the McCanns, the St. Albert couple missing and presumed murdered.
IMHO
It's still very possible that the Liknes/O'brien bodies were burned on the property, and also possible that they were first burned, and then the remains were left near the animal reserve.
Are there a lot of missing women in the Innisfail area?