Entered Sylvan's Cradle Site of Power without completing pre-quests

I did not complete the pre-quests to entering the Sylvan's site of power, so I couldn't enter through the barrier entrance. However, when I walked up to the barrier and bounced off, I got disconnected from the server and logged out. When I logged back in, I was on the other side of the barrier and inside the site of power. I continued on and completed it. I then went and did the pre-quests so I could finish of Sylvan's cradle, but I've not hit a progression bug. Now I have 'real' access to the site of power, I can't complete the "Kill Azazel, the Penitent" because I killed him earlier. As a result I now cannot progress past Sylvan's Cradle.