I found a way, but you need a VPS or fast rdp + md5 hash changer

for example your game is Test_Drive_Unlimited_2_EUR_JB_PS3-ABSTRAKT.rar

rename it

like TDU2EJBPS3.rar and then change md5 hash
pack it
rename it to another and change hash
and pack it
rename it and change hash

system check Only the deepest pack and if its not blacklisted
system blacklist the the last packed file not inside 3-4 level files one by one
it takes long time and kill servers

if netload blacklist a group of games, download them from rapidshare backup
unpack one level and reupload

you may repack as much as you want, but you need powerfull RDP or VPS
for huge games.