Wow thanks for your exact description of the glitch you discovered.Not sure what you want to tell us with your post tbh. If you want to report a bug to either the wiimmfi team or the ctgp-r team you should be a bit more precise what happened to you in 2 player vs.
Mario Kart Wii Friendcode:
5460-6092-2743 (OpenHost)
Distributions I play regularly:
Wiimms Mario Kart Fun | CTGP-Revolution | Hack Pack v3 | Mario Kart Wii