It sounds like maybe it is picking up something from a config file. I can't recall what the config file is called for bfgminer, something .conf. See if there is one and either rename it or delete it.
EDIT: I guess alternatively you could also just put your own config in the config file as well...
OK, I found and modified the cf.conf file accordingly.. but it's still coming up with the slushpool.org information. Any help now?
I also thought that maybe I needed to reboot the machine. So, I did that too. Still, that didn't solve it.
Thanks