The Exploit:
You are able to stay in Tol Barad when your faction is not in control. This is done by logging off of your character within tol barad while your faction is in control, and then log back into that character again when your faction has lost control, causing you to still be in tol barad.
Useless exploit some may say? You could do a Mass Guild summon or get a lock to summon people into there, having some fun destroying all of the oposing faction, this would be best to use straight after the enemy faction has gained control when its most populated.