Cca has BLHack.dll, as well as a full variety of other people who openly admitted to it on Cca's drama and a few other threads. None of them are banned.
Spam is an even lesser offense than BLHack. If you were Badspot, you can kiss quite a few notable players goodbye. What do you think you accomplish by banning for something as low as spam? When was spamming as bad as a DDoS attack?