The last several times I have run it on my Guard (post Volume3 patch), the first fight has gone like this:
We all run up one of the stairs, bring two sets of two Uruk Guards (4 total) with us to the top of the stairs. We burn down about 2.5 of the Uruks, then main tank aggros the Brute and his two Uruk Guards. I think that stops the next wave from spawning. At that point, the 3rd Uruk drops and we have a total of 1 Uruk Brute and 3 Uruk Guards. MT has aggro on 3/4 of the mobs. Another two Uruks usually spawns part-way through the fight. We AoE like crazy and burn down the Brute, whether by direct damage or by absorbed damage. Even with solid AoE taunts, my guard still has trouble keeping aggro on ALL mobs for the duration of the fight.
TIP: Be sure to tank the Brute so that he is facing AWAY from the rest of your party. His AoEs can outpace the healing your min can output. This also applies to the BG raid.
I'm not sure how the strat would need to be adapted for Wardens as MT though. I'm assuming the Warden would need to be on raid assist and have people DPS your target first, so you don't have any peels.
If you are running with Champs/Hunters that aren't managing aggro and die from peels, smack them upside the helmet.