When Orfen hits 50% she resets to your original position and heals up to full. Her adds also immediately respawn after kills. Does anyone have a properly working Orfen raid fight?

Its easy.

On l2off in the middle it moves to the lair. Orfen doesn't get full hp but being healed by minions when being hit. So when you reach her she will be still ~middle hp.

You can cancel its teleport to the lair by debuffing a boss with a high level char during the fight. Then the boss will cast raid curse on a char instead of teleporting to the lair and can be easily killed ;)