Fix horrible, horrible bug

memberof.go

@@ -43,7 +43,7 @@ func (server *Server) memberOfRemove(member string, group string) {
 	newMemberOf := []string{}
 	for _, mb := range memberOf {
 		if mb != group {
-			newMemberOf = append(newMemberOf, group)
+			newMemberOf = append(newMemberOf, mb)
 		}
 	}