That's right he didn't. The OP didn't quite do the TL;DR right, really the letter goes something like this:

Part 1 (How I made my manager hate me): I insisted that we have better performance and everyone told me to f* off, so I went above my manager and now she hates me. (This is reasonable of her)

Par 2 She asks me to commit a crime and I raise it with HR, etc.

No, that issue seemed to get cleared up successfully. He used that to foreshadow issues with his manager and general escalation communication.