I also use a warrior and found when tanking this I usually end up with the ranged almost everytime lol. I usually use Heroic Throw on the rogue then Charge the hunter and thunder clap/shockwave which should now allow some healing while you tag each of them with a few sunders. If you can take them around the left of the door near corner (enough to los the hunter) sometimes the hunter wont move from there.

I use these Glyphs to increase threat gain:
Glyph of Sunder Armor - Sunder Armor now affects a second nearby target
Glyph of Devastate - Devastate now applies two stacks of Sunder Armor

When the hunter is in range of you try to hit it with about 3 Devastates and some heroic strikes while moving back to the main target to toss 1 or 2 so you dont loose aggro.

Hope this helps some, I hate this part as well.