Don't treat those forced to spec as leavers.

[WalkerY]

I added 2 lines after comment below in balance.py. If I understand correctly, those may be needed.

            if allow_spec:
                player = self.player(name)
                if not player:
                    return True
                if player.team != "spectator":
                    self.put(name, "spectator")

                    # Don't count those pushed to spec as leavers
                    if (self.game().state == "in_progress" and player in self.players_start):
                        self.players_start.remove(player)

                    if rating > max_rating and max_rating != 0:
                        self.tell("^7Sorry, but you can have at most ^6{}^7 rating to play here and you have ^6{}^7."
                            .format(max_rating, rating), name)
                    elif rating < (min_rating+delta) and min_rating != 0:
                        self.tell("^7Sorry, but you need at least ^6{}^7 rating to play NOW and you have ^6{}^7."
                            .format(min_rating+delta, rating), name)

[MinoMino]

Not quite that easy. players_start is a list in the ban plugin, not balance. Accessing it through Plugin.plugins without locks could lead to weird behavior because of race conditions, since the method in question can be called by a different thread. Will fix, though.