Have a chat, all of you together, including your DM friend, yourself, the five other players. All together. Then discuss what you want to do next, and try to find common ground together. You know. Relax, talk this over, and try not to take offense when and if you disagree. Try to see everyone's side, and then try to come up with a way all these sides are represented. Like maybe running the game together, or alternating DMing duties, whatever it takes to keep everyone -and I mean everyone- happy, and the channels of communication open, and direct. No talking in the back of other people. That's not cool.
Good luck.