It actually makes perfect sense, due to the way MAIN.DAT is structured. Specifically, the first rank sign stored in it is the highest rank, then the next is the second highest, and so on.
ONML's MAIN.DAT stores 5 ranks, so this order means Tame is the 5th image. However, while H93's MAIN.DAT would seem for that reason to have been based on ONML's, it only contains 4 ranks, which means Tame is dropped. Also, the highest rank is 2, so the slots that are actually used are the 3rd and 4th image (for the 2nd and 1st ranks respectively). When you get to a glitched 3rd rank therefore, it loads the 2nd image - and since there *is* no 3rd rank, they must've just left the previous one there, which is Wicked. Once you go past Havoc, I'd assume it attempts to load... well, whatever data comes *before* the rank signs in MAIN.DAT (I think it's part of the logo? but I don't remember off-hand). Hypothetically, by creating a customized MAIN.DAT, you could make actual coherent images show on the "glitched" ranks, although the side effect would be other graphics becoming glitched.
You won't get to Tame even if you wrap around. After the Flurry image, the next stuff in MAIN.DAT is the purple font, not a 5th rank sign.