ok first of all the rogue prolly suck, asking a prot tank for more dps is plain dumb, he should be asking for more threat to unleash more dps instead.

for you, a few tip:

when the boss is blade dancing, STAND STILL. hold ur right mouse button to turn and FACE him wherever he is, to reduce the dmg he do to you from blade dancing. once he is done, immediately TAUNT as he does reduce ur aggro by a certain ammount, this is to ensure no aggro loss will happen while boss is blade dancing and say ranged dps class such as mage or healer healing getting aggro. after taunt to put you on to SECOND place of the aggro list, IMMEDIATELY shield slam. of course hopefully by now after first blade dance you have 5 sunders stacked, if not, always remember to get 5 sunders up ASAP and maintain it via devastate, but shield slam is still your most important aggro generation skill, so use it EVERYTIME its cooled, if low rage, save rage for shield slam priority. if got spare rage, just spam ur devastate and if you got more spare rage, toss in hs's (this is only when ur having excess rage because it negates ur normal swing to generate rage)

also dont forget to maintain battleshout 100% as it boosts ur aggro, dmg, and rogue/hunter etc's dmg. by any chance ur rogue or any other melee class or urself going low hp, commanding shout.

to summarize:
sunder armor 5 stacked up asap, and maintained 100%
battleshout maintained 100% (commanding if low hp)
during blade dance, stand still and face ur warrior to the boss to mitigate his blade dancing dmg
after boss blade dance, TAUNT THEN shield slam

for the ranged dps such as mage/hunter:
cc if possible, and focus more dps on boss

rogue:
if possible, let the ranged dps or other classes to handle adds while he 100% non stop focus boss. due to the nature of CP generation, if the rogue have to switch target constantly, his dps will be limited and its not desirable if what you're lacking is dps.

to everyone excluding you:
SPREAD OUT

WHEN BLADE DANCE OCCURS, DO NOT BE ANYWHERE NEAR WITH YOUR TEAMMATES, PETS COUNTED, HAVE THE PETS POSITIONED SOMEWHERE ELSE.

Something I can add that hasnt been mentioned so far...

1. Adds come every 30 secs. Get a mage to CC one add while he dps. For your next run, try to replace a priest with another dps class, e.g. hunter (ice), lock (CC / Fear), which can assist in CC while dpsing. Warrior can fear if needed.

2. Rogue MIGHT have a point IF this is all you're doing "i just throw sunder amor and devestate, and sheild slam". Where's the heroic strike?