[WhiteRose1912]

1.) You are identifiable, so be careful what you say (be respectful).
2.) It is highly, highly unlikely that anyone other than the organization you decided you didn't like will be having recruitment in the fall. There are a lot of seniors graduating, so there's a chance, but it's slim. You can try formal again in the spring, but that will likely be your last chance. Juniors don't rush on your campus.