Post by Porcell
It's not parry haste. Parry haste has been turned off for Gormok.
"Hotfix (2009-09-09): "Gormok the Impaler no longer attacks quickly after a parry in any difficulty." Source
Here's what the fight looks like when we do it:
T0: Tank 1 starts
T10: Tank 1 gets impale #1
T20: Tank 1 gets impale #2
T22: Tank 2 taunts
T30: Tank 2 gets impale #1
T40: Tank 2 gets impale #2
T42: Tank 3 taunts
T50: Tank 3 gets impale #1
T60: Tank 3 gets impale #2
T62: Tank 1 taunts
T65: Original impale drops off Tank 1
T70: Tank 1 gets impale #1
T80: Tank 1 gets impale #2
T82: Tank 2 taunts
T88: Tank 2 pops a cooldown
T90: Tank 2 gets impale #1
T100: Tank 2 gets impale #2
T102: Tank 3 taunts
T108: Tank 3 pops a cooldown
T110: Tank 3 gets impale #1
T120: Tank 3 gets impale #2
T122: Tank 1 taunts and pops cooldown.
T130: Tank 1 gets impaled, Boss should be dying right about now.
Tanks MUST start popping cooldowns during the second rotation or else it's quite possible you'll get killed. If Gormok's swing timer, an impale tick, and an impale strike all happen to land at about the same time, you are going to go down and there's nothing a healer can do about it; you have to have some sort of cooldown going. With Gormok's Rising Anger buff, he's going to be hitting really hard at the end of the phase.
Post by Porcell
(I have almost 46k hp and 29k armor unbuffed and I still sometimes die).
That is a lot of health unbuffed. What is your toon's name? I would be interested to see your gear.
The only person I know with that much unbuffed health is Grafarion, MT and GL of vodka. I talked passed him in Dalaran the other day and couldn't believe it. Then again, every piece is has is 258 and/or BiS. Guess it's one of the perks of being guild leader of one of the top US guild, and using a loot council system. http://www.wowarmory.com/character-sheet.xml?r=Alterac+Mountains&n=Grafarion
I'm at 41k unbuffed and 51151 when totally buffed.