If this has been posted before I apologize. I just searched for "Urok Doomhowl" and all I got was people asking about gear drops.
Anyway, the event where you get head of Omokk and mount it on a spear in LBRS to start the event with the ogres, is totally fucked. The adds spawn waaaay too quickly to kill (3 at a time, with 10 seconds or less between each wave) for your average 5-man unless you massively outgear the instance. It's an almost guaranteed wipe every time and can be very frustrating for the group, because may people just want to skip it.