This isn't the place to discuss if you think the other user broke the rules, you seemingly did and admit to breaking the rules, if you have an issue with a staff member's conduct, make a staff complaint.
Denied
Yeah your friend is lucky that he wasn't CWB'd for his threats. This won't be considered for quite some time and he will probably have to serve majority of it. Also his forums isn't banned, and you can not post for your friend, he must use the external appeals if necessary.