I queued for 50/60 roulette as tank a few weeks ago, got grouped with 2 BLM and a WHM in Amdapor Keep. They Teleported out of the CS holding pen, pulled everything before the first boss, and after the second, into the courtyard, then teleported underground, and AoE'd them all to death, and dropped group. I just watched dumbfounded, backfilled my instance, and we enjoyed killing only bosses and 1 small hallway of trash, and made record time.

I reported the HECK out of them after.