No. When you ban someone from an external source (adding a ban to the bans table) It doesn't take effect to the server immediately. It requires you to reload the bans. Using that MUS command will do that for you (allowing for immediate external banning from site & server).
Here's how to remove the license check!
Just go in "Program.cs" and find:
string appLocation = System.Windows.Forms.Application.StartupPath;
string name = "";
string parm1 = "";
string parm2 = "";
string parm3 = ""...