I got queued into a partial guild run for Heroic HoR towards the end of LK. I liked this place a lot, saw the group looked good, and was excited to do one of my favorite instances with a good group. We steamroll the first two bosses, then comes the fun.
I don't know when the trend started, but tanks would kite the Frostworn General back to the chamber so the five adds didn't spawn. I always found this to be a royal waste of time, as all you had to do was dorp some AoE on the spawns and they went down in 10 seconds or less. So I see the tank start to do this very thing, and I quickly typed out, just leave him there. Instead, the tank felt the need to drag the general back to the chamber, unbeknownst to the healer, lowering the group dps in the process, and eventually dieing due to no heals.
I proceeded to question the need to kite the general, "Hey, ya know it takes less time to just leave the general there and dps the adds down?"
Tank - "No it doesn't tard. You save time by not having to deal with the adds. So stop bitching."
Me - "Yeah, we saved tonnes of time having you die, and waiting for you to get rezzed up and rebuffed."
Tank - "STFU, more cuss words."
About this time, I noticed three of the people, including the tank were in the same guild, and I coud see the writing on the wall. The proceeded to vote kick before the escape from Arthas encoutner, but waited to actually vote yes until I had helped them do all but the last couple of mobs, so I was booted mid fight at the very end.
I guess this was one of those "sensitive, know it all tanks" I see a bunch of threads about.