PS, it's SO not your fault that people died from being Water Graved. Having to heal up 5 people just before murlocs is ridiculous, I tried to help out by popping a renew on whoever was in range, and heal up the people as they were coming back to the main platform. It's also unfortunate when an Earthquake happens and then exactly right after you get Graved. That happened to me once, and there could be nothing you could do to stop that; I didn't even survive the initial Water Grave damage!
One thing to note is that, if you are below 5K health after a Watery Grave, don't come back up onto the platform, or you might die from Earthquake. The murlocs will ignore you if you just stand there and let someone heal you up.
Popping a bandage right after a Watery Grave also helps on healer mana. With Gnos taking so much spike damage, we can't always devote so much time to healing up people who have been Graved. There were times when Gnos was down to 1K health before my big heal went off and his health stabilized after that.
Since there is at least 10secs right after a Watery Grave before the murlocs pop, it's seriously enough time to pop a pot/bandage and still get back into the fight without getting Murloc aggro.
Still, we did it and we have lootz to prove it!