Perhaps the constant ditching parties you deem "unfun" as well as your latest actual accidental DC shows a pattern of on purpose/sketchy leaving?

You seem to have a grasp of a lot of the things that COULD have contributed.. the question is will you continue these things knowing they might be part of the case against you?

I don't think you deserve to be banned, or that your warning is warranted since I am not the GM looking into the case nor do I know what they track to "validate" reports....

But if you can think of all these things yet insist on continuing to do them, it's food for thought on who'd be to blame if it progresses further?

Perhaps talking in game is less important or contributory than HOW you play the game?