This reads like someone in his department targeted him with the conclusion in mind: termination. Someone wanted him fired. They tried every option available, and they eventually succeeded.
Still, there's much that's public about it. Surely some rules are desirable.
If anything, the Obama change made things more consistent. Civil hearings use preponderance, and criminal use a higher standard.
You’re pretending that means “require criminal standard of evidence”.
See the problem?