I would be virtually 100% confident that Mayo Clinic Arrogant did not freeze any tumor. Aside from standard of care treatment, or in house protocols, nothing else is on the radar at MCA.
Their surgeons probably don't even know about or are aware of NWBO.
However, the only glimmer of hope might be, that one of the scientific advisory panel members is a neurosurgeon at MCA in Jacksonville Florida. He would probably be your best Avenue at getting that information to MCA physicians in Az.