I finally had time to take a proper look at this. Installed today, seems to work fine. But one bug, one of the postinst scripts, I think it was for the kernel package, complained about missing python. I don't have that installed and the package didn't require it. It did still install fine.
echo -e 'import struct\n\ f=open("'"/usr/share/Diablo-Turbo/backup/zImage-backup"'","r+")\n\ f.seek(0x2C)\n\ l=struct.unpack("i",f.read(4))[0]\n\ f.seek(0)\n\ f.truncate(l)\n\ f.close()'|python -