Killed him with just 2, 50 Champion and a 50 druid (my bot) took about 4-5 tries in total. Strategy was to pop my RR5 get 2-3 hits off in the back before he could attack back (stun first) and then get to healin with my druid. I could barely hold aggro (which is why it took 4-5 tries) but my RR5 let me do so much dmg that it was possible.
I believe this lvl is right - this one monter which roams around Flame is grape to a lvl 50 and is extremly hard to kill - once while attempting to kill Flame it aggroed on our druid - well needless to say we where yelling for a rezz 10 mins later - we got it down to 1/4 and it took 10 mins - and we had uber group of all 50's with bladeturning - no way this is lvl 60 - If I was to take a guess it's more like 68+
As with all epic level mobs in Cursed Forest, Raumarik and Llyn Barfog, they initially start neutral. Each one you kill lowers your faction with them, however. After killing about 6-8 your aggro has lowered enough to where they go aggro to you.