I read through the case and I think I would have pardoned this. I can't speak for EU though. My advice would be to not be as sarcastic/sounding (deliberately or otherwise, it set off those people regardless). Additionally, clarify what you're saying so that people reading the logs in the tribunal (and people in the game - but forget about people like that Riven, that's a no-win scenario) won't just automatically vote against you, although you'll also have to work on making that not sound sarcastic.