If suspension bar fails, for whatever reason, and the head flaps dramatically, this would put huge strain on the conical housing. If the conical housing ruptures, and in this case it has, the mast splined end in the upper stage epicyclic would impact a huge lateral bending loads on the planet carrier which in turn would compress the gear train and put huge lateral loads on the ring gear in the moments before catastrophic failure of the whole assembly.
There are many ways to de-construct the scenario. I think we should keep an open mind.