i remember a run in EC where you face 6 or so mobs right before zorn and toth, a guy force sweeps in the middle of 4 cc'ed mobs--->wipe.
if it is one and you compensate taunting or putting it down fast there aren't problems but you can cause trouble to everyone.
i agree with the issue of people used to being overgeared for HM FP..love the new ones!
I remember a ec sm run where someone got kicked back in exactly this mob group and pulled zorn and toth.
we had tons of fun and brought them down ^^
(I know it was only sm but two of us didn't know the bosses)