I soloed him with shaman and lock at 90:
shaman: use both fire and earth elementals in between channels to help keep the adds down
warlock: used dark apotheosis and grim sac- got enough healing aggro to keep them mostly off the boss
both were still very close though
U can't solo him.
So you're saying no one can solo him? LOL!
Check my history and you'll see I did it on the night of 5.1 release. I haven't been able to solo him before 5.1 and it was extremely nice to finally be able to.
Want to down him? Do this:
Kill the Controller and his 2 adds and immediately click the orb. Break every single egg in the back as you can as fast as you can for the FULL duration of the Mind Control. When the Mind Control breaks, AoE all the adds that are on your character as fast as you can. You cannot spend a lot of time doing this. If you need to, drink a health pot or eat a healthstone.
Click the orb again and get control of Razorgore. Now break the rest of the eggs as fast as you can.
The trick is to break all the eggs in 1.5 mind controls. It's all about speed. The faster you break the eggs, the sooner you will beat the encounter.
I've solo'd him on both my Warlock and Hunter since the patch. Both times were done on the first attempt.