This query will allow players to be in Hyjal without teleporting them away.

UPDATE spell_area SET autocast = 0 WHERE spell = 42202 and area = 616;

Click to expand...

Remember to do .reload spell_area or just restart server.
Hyjal Teleport : .go xyz 5424.980957 -2812.015137 1464.082886 1 1.306520