I was IC friendly with the character, believe I was Marshall at the time. What I recall happening is a little different than this.

He was Provost and a long lived character/good presence for Tribunal at a time when they had little to none. He had decided to help Fortress against Empire including raiding for the Codex. Imms decided this didnt work for them and smacked him around, stripped him of the post but left him in the cabal. Not sure but i thought it was you who made this call, Umiron.

He didnt take it well, I tried to talk to him about it IC, he never went ooc, but going off the hinges is a good description. He decided to burn it all down.