Instead of this being a CPT violation that requires all of physics to be "rewritten" there is another possibility that I hope they will look into.
Just like a finely balanced wind-vane (weather-vane) that can be moved around by the slightest breeze, might it not be the case that these particular isotopes (proton+neutron combinations) result in a unique very delicately balanced system that becomes "sensitive" to the movement and flow of other smaller matter/energy movements which can thus result in the apparent imbalance in shape?
For instance; if the nuclei of these isotopes are able to be influenced by the flow of a large enough number of neutrinos (for the sake of an example) traveling with sufficient energy then that could cause a wind-vane effect wherein the nuclei would be deformed in the direction of the neutrino flow, or perhaps the opposite? (btw: If this is the case then we now have the ability to build cheap neutrino detectors, or detectors of whatever is causing this.)
I sincerely hope that this idea is brought up with the scientists involved with these discoveries so that it can be investigated.