Due to the weekend being a holiday weekend and wanting a shot at being one of the first guilds on the server to complete the Trial of the Crusader, we did our raid Tuesday night in the Coliseum. The Faction Champions gave us a bit of a headache as they most always do, but we had it after 4 tries. We one shotted the Twin Val'kyr, again, even though I still don't feel like I understand the fight. And then we tackled Anub'arak!
I only knew the basic strategy as no real information other than what was from the PTR was available. We tried to keep him on the permafrost so he wouldn't burrow, but we never seemed to be able to completely keep him from doing so. It may be that you can't keep him from burrowing and that the permafrost is more for avoiding the spikes in the second phase and slowing down adds.
Whatever the case, after 4 or 5 trial and error shots, we got him! We went on to attempt the heroic Northrend Beast fight and had a good laugh when the Jormungar entered the arena BEFORE we had killed Gormok.
We ended the night by taking down Koralon, the newest boss in the Vault of Archavon. Two shot, and a lot of fun for some Emblems and Tier 9 gear!