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That said, your spec is somewhat whack, check some of the guides around here for a good one, or even mimic mine. Cruelty is useless, imp spell reflect is good for gimick fights but not good enough to keep in your regular spec. Keeping both shield spec and focused rage maxed out is not optimal in most situations, I'd take 2/5 SS and 3/3 FR, or just 5/5 SS. You may want to finish imp disciplines off, imp charge, impale and deep wounds for threat, or drop that one point from imp charge, and put more into defensive or shout talents to max survivability.
Your gemming is somewhat whack too, you went for every socket bonus which is not optimal. Drop all your hit gems, not needed. Any bonuses that are for less than 9 stamina or no stamina at all should be foregone for a blue stam gem. 9 or more stam warrants either def/stam, dodge/stam or expertise stam. After 26 expertise skill, go for dodge/stam.
Also, get some trinkets with stamina or armor on them, static. Those two don't do much benefit for you. All of these changes will make your stats much more optimal to tank ICC.