My org made 24 attempts using the old methods posted (won him on the 25th try, first time we tried this strat) on this guy before I finally came up with the way to win this encounter with a single group (3 people playing 2 characters each). This mob actually really easy to kill with 1 group.
What is needed:
1 doc
1 trader
1 tank who can hold agro thru the stuns (I tanked him in tree form on my adv)
3 people to do dmg
It really helps if each person is doing a different dmg type, no extra weapons are needed.
First let me explain what I learned about this mob and his buff called adopt damage. When he spawns he instantly casts Adopt Damage Trigger. This in turn will reset his damage tracking to 1 then when it terminates it triggers his actual damage tracking buff, Adopt Damage. This buff tracks each damage type until it does 6% of his total health then he resets that damage type tracking to 1 and puts up his reflect and DS.
What is interesting about adopt damage is when it terminates it recasts the adopt damage trigger which resets all of his damage tracking.
The key to single grouping this is the doc nano Epsilon Purge. This nano removes 5 buffs from each school which take 35 ncu or less. Adopt damage, Adopt damage trigger, and each of the reflect buffs are 1 ncu each. The down side to Epsilon purge is the 200% NR check which is where the trader comes in. When the boss spawns the trader sticks their NR debuffs (minimum is the set that removes 6400 NR from the mob) and keeps them up at all times. The doc then just heals and every 30 to 60 seconds sticks a purge on the boss and he will never trigger his reflects which wipe agro.
How my team set up and did it:
I morphed to a tree so Uruqhart could not stun me and spawned him with bio cocoon up. While cocoon was up everyone held back and let me build some agro since it was not going to be wiped off. Once I started needing heals the trader cast their NR debuffs and maintained them. Every 60 seconds or less the doc would announce they were casting purge so I could do self heals until their recharge was done. Each person had a lock-out macro to announce if they locked out a dmg type. If that happen everyone would back off and let me get agro again while the doc cast purge. Once purge landed everyone would go back into doing damage.