I've found out a pretty useful exploit when it comes to duelling in durotar wich makes you leave combat so you can use abilitys that require ooc like stealth, sap etc.
Duel someone in durotar, then you can use throw or whatever to kill a random boar that roams around in durotar or any other creature for that matter.
When the boar dies you leave combat.
im not sure if this is an exploit or a bug, and i couldnt find anything when i searched the forums but there you have it!
Want video proof?
WarcraftMovies.com - World of Warcraft Movies
(Fast forward to roughly 7:00)
//Remembrance