Guide: Black Screen App FIX is mauifrog's black screen fix. maybe that helps if you bannerbomb wadmanager and install a fresh copy of ios36 and ios35(in the end of the guide mentioned for forwarder and hbc freezes).
as you have a nandbackup and bootmii as boot2 you are on the safeside. i would go for that i think. revert and rehack using the softmod any wii guide.
good luck for now, maybe someone else has suggestions too.