Actually thought that it was an easy fight before, and still hella easy. We've taken him down twice since the patch.
Your gonna more than likely lose a few people to the cat memblurring, but honestly it's not that difficult of a fight. Just have to figure out how to agro them both efficiently and where to put the dps and it's cake. I'm not gonna spoil it for you though. You haven't beaten him the way that he was meant to be killed yet though sorry.