if it has installed as the system menu, title 00000001-00000002 as it claims, then i think it just functions like a loader patch for the system menu. instead of booting directly to the system menu it runs his code first, and if you press load system or whatever it jumps to the real menu entrypoint.
so you should be able to remove it by overwriting it with a new system menu, just don't delete it or you could fully brick your wii.
if anyone has gotten it to work, what's your system menu version/region? same for those who haven't gotten it to work. it could be expecting a pal menu or an older version (3.2) like starfall.