I soloed him as 62 warlock.  It's a long fight, so start with immolate, corruption, and curse of doom.  After that, you will have no time for anything other than instant casts.  All your time is spent in health funnel because otherwise blacktalon will kill your pet (he hits hard and crits often).  Took me about eight tries.  Also, don't start the fight until you've let all the alphas in the cave respawn and taken them out again, because they will spawn during the fight.  Finally, don't use fear or death coil except to save your life when the pet loses aggro, because he'll run into an alpha and it'll be all over.