DansGuardian with a proxy like squid should give you a basic websense-alike system - but even with all ports closed at the firewall except 80 and 443, bittorrent will likely still get through.

If you're truly worried about litigation, it seems like you could find a little money to deal with the issue. Take a look at Palo Alto Networks firewalls, especially the up and coming low-end model the PA-200.

Perhaps removing your head from your rectum is in order... a single Sabre BPO did NOT magically turn the tides for BoB's industrial machine and grant them ISK beyond measure. The rest of the BPOs that he spawned for himself were even less important than the Sabre, and likely all they did was save pilots in BoB from going out and buying that ammo. Honestly, with BoB's size, this has more of an impact on other producers of the ammo not having their product purchased than it gives an "advantage" to BoB.

I'm glad you quit, one less imbecile in a game I still think is the best around with one of the best companies backing them. Have fun playing WoW.