I believe they predicted something slightly different. That the magnetism would remain until structural failure. . Simply put physics says if you put enough en

I believe they predicted something slightly different. That the magnetism would remain until structural failure. . Simply put physics says if you put enough energy on an atom in a solid, it will eventually leave the solid on the solid/vacuum boundary from raw kinetic energy alone. Now, if you're trapped in an infinitely large solid, there would be no boundary and the magnetism could remain. For example the example of the early universe would be an example of one of these near infinite structures where magnetism remains. Large astronomical objects with lots of gravity may be able to reproduce these conditions somewhat like this. With all that said, it should give us means of maintaining magnetism in an ordered manner in structures we'd consider hot as a human.