This is getting to the point where I want to throw tantrum at the tank in 5.0 dungeons.

You can sprint all the way for all I care, but if it takes you to burn all of your defensive cool downs to stay alive after ONE SINGLE big pull in dungeon, the chances are you healer also burned all his/her healing cool downs as well.

What comes after? You sprint to do another big pull without tools to stay alive and your healer ends up spamming single heal as hard as one can possibly do because everything else is on cd. Your two DPSs are doing the best they can to kill everything, and you are but a wet tissue paper. Everyone then dies and it's a wipe.

If you are a tank with a brain, you can judge you party members on how they perform. Are the two DPSs good? Is the healer capable? Is my cool downs available to do the next big pull?

Staying alive during big pull is a team effort. Not just if the healer can keep you alive or not.

Please stop killing your healer and DPSs. Please.