Actually, I think that the only time I've seen the words "Secure Pie" used is in this thread. I believe that the official terminology is "Secure State Frame Headers of Radial Layout".
I'm getting my hosanna machine down from the attic, just to be ready. :D
Sure, it's part of that secure state frame headers junk, but i'm pretty sure in the framexml, it's called pie =)
I'm not at home to check tho >.>