There used to be Wintergrasp disconnect protection.
When player disconnected during Wintergrasp battle, there was 30+seconds long period when it was possible to reconnect, click on enter battle and join the battle regardless how many players are in Wintergrasp queue.
This is not the case nowadays. Reconnecting ASAP after disconnect or wow error puts player at the end of Wintergrasp queue and removes player from Wintergrasp.
