Tuesday our guild rocked 25 reg ToC and last night we decided to give Hardmode a couple tries. We moved in and immediately noticed Gormok was MUCH harder. We would either get him to ~20% and the worms would spawn, killing everyone, snobolds would become a focus for dps, creating a lack of dps on Gormok leading to yet another worm spawn, or, and this was our largest problem, a tank would taunt Gormok, gain aggro, then immediately get 1 or 2 shot by back-to-back Impales. Before each tank taunts we make sure they wait for the debuffs to drop completely.
Our tanks are a feral druid, a frost dk, and a prot pally. Each one is in 3/5-5/5 8.5, or even some 9/9.5. They have all tanked all of Ulduar and ToC and have the gear to prove it.
After calling the raid we discussed our issues, and the back-to-back Impales came up as the largest issue. Does anyone know if there is another condition that maybe causes an Impale, or if it might even be bugged?
On a side note, the 2 tanks not holding Gormok made sure they were standing behind him along with the rest of the melee dps to prevent parries.