Threads like these are why I'm terrified of tanking through the Duty Finder. I'm not a very good tank, and I'd like to be a better tank, but if I'm just going to get kicked for losing aggro or whatever, how am I ever going to improve? I dread the leveling roulette because certain dungeons are really hard for me to tank. Most days I don't even do it.

As for healers in Cutter's Cry, if they were a Scholar, they might not have been able to remove the sludge. Scholars don't learn Leeches until level 40.