OK, so I fucked up.
When I modified the script so that I could send rejection notices, I first tested it with the acceptance email template, which is sent for every accepted gallery and free site. Oops. I forgot to change the subject line back to 'Accepted' when I was done screwing around, so everyone who was accepted today received an email with the subject 'Submission Declined - Please Read'. If you read the email, you would have seen that your site was actually accepted. Sorry for the mixed signals. I'm an idiot. If I had a day job, I wouldn't quit it.
Thanks to ErickG for pointing out this pretty messed up situation. Someone shoot me - please.