So i did gundrak and when Gal'darah was on around 50% health tank died and everyone else died except me. So i tryed to survive because.. repair costs.. and did slowfall + nitro boosts and jumped away into the water. He followed me swimmed down to me and kill me. When we returned he was at 47% health stucked on the stairs. we could attack him. He didnt do a thing it was just to full nuke :P.
Notice that none of us are in combat. (note)
pic:
So if ur about to wipe around 50% health (may work at any other % too)
try to just run and jump into the water and make him come after you and make sure he is enraged (probably works without enrage too) and die in the water.
I have only done this once but probably works.
So this is like: http://www.mmowned.com/forums/wow-ex...made-easy.html