Well, from what I know, Snipen got really annoyed with team changers, newbs were changing teams to the one that was winning, or they were just being annoying.
therefore +1 for iron and 'make teams even'
except for when one team is plowing and you try to change teams to make is fair (me go from dominating team to poor team ).. but you cant
It's not implemented, and they're not doing it. They've just disabled team joining/changing.