Turns out the party was made over.
Got another question. People keep teling me about the "auto join" option, and suggest that that's how I ended up in someone elses party against my will. I've never heard of the "Auto join" option and I couldn't find it in the rules.
Being under arrest, I can't check and see. Is there an "auto join" option that lets other players add you to their parties? If so, it shold be added tothe rules,and set to "no" by default.