Hello,
I know this issue, and although I cannot confirm whether it is intended or not, this may actually be intended as a so-called punishment-action which means that the party should make sure that the tank survives no matter what. Also since Hall of Earth is for most guilds not that challenging anymore due to the level cap raises, I wonder whether this will be worth the effort to have it changed. Considering the fact that there is more to do, I unfortunately think not.
Zerker.