Max hit on a group geared (TBM/TDS) tank with only 12k AC and 166k HP buffed was about 27,5k. With 12k+AA and max burn this mob shouldn't be a big problem. The most serious issue is the spot to pull. Use the center of the big room then you are far enough away from the roamer circle left of is spawn point and you have no adds. The spells of the possible adds are much more serious than his little DoT.
Spells:
Fog of Spite - Duration: 3.0 min - Range: 1000 - AERange: 120 - Resist Disease Adjustment -950 - Decrease HP by 11385 per tick - Increase Corruption Counter by xxxx
Radiant Cure removed the Corruption easily.