That information is at least somewhat comforting. For better or for worse (and most people will probably say for worse) I decided to just report my scores. If a crummy subject test score is enough to disqualify me from a graduate program then I'm probably not qualified for that program anyway. I'm thinking about writing a little statement for my apps that says something like "my subject test scores are bad, I know it, but I decided not to hide this from you." I'm not one to make up excuses for why they are so bad, so I won't be saying anything like I was sick or my dog died. I didn't study, but that just shows laziness on my part. Anyway, I hope all of the other applicants on here are in the 67% who scored higher than me.
Best of luck to all on your applications.
I'm in the processes of getting demographic information from ETS, and if they actually provide me with it (which they said they would), I'll post it.