Watch this video to see what they do for WP speed run. You'll need a geared group that is working together. A healer that is experienced healing through large pullings while making the time to through out aoe dos. It takes some practice knowing how to set up the tank to stay alive for 2 or 3 holy spams then getting him back topped off and ready for another set of holy spams. As a tank you need to know how to manage your mana for continued flashes and chain pulling. You'll need to watch for when CD's are used and why. Need an AOE group, melee will slow it down a bit. Blah blah blah, watch the video.

http://www.youtube.com/watch?v=qRRaUh5uQJQ