There is only one way I know to get it 'back to normal':
Run multibos -R to remove standby LV's (multibos -Rp to preview).
If it removes the normal hd5 etc (and leaves bos_hd5) you will need to run multibos again:
multibos -sX (sXp to preview)
set bootlist to the new hd5, reboot, and then run multibos -R to remove the bos_ LV's