I think it might be a good idea if they reset both teams weapons, health, armour etc after each round in freezetag. I think that the unbalance of teams is multiplied by the fact that the winning team starts with an advantage. I have been on both ends of this situation and i didnt really enjoy dominating or being dominated because the game started on an uneven keel. This may not be the case in "organised / pro" server matches but certainly seems to affect the balance of games in sampler matches which have a wide variety of skill bases. Just my opinion.
your idea is to send them to play clan arena ...
ignore them you know they are just idiots and thats all that matters, just carry on and enjoy playing