[sitkack]

That could be polite speak for, "totally lost his shit when when I interrupted a derivation"

If someone trashed my knick-knacks and smashed my furniture for what would be normal personal interactions, I too would ask for a leave of absence.

[BigTuna]

It's important to remember that before the days of no-fault divorce false allegations of cruelty were commonly made to justify the split to a judge. Both parties to the divorce would agree on the story in advance and testify to the same under oath. It amounted to widespread ritualized perjury and was one of the major deciding factors in the passing of no-fault statutes.

This is all to say, take the allegations of extreme cruelty with a grain of salt.