We've actually done all of the steps in that article. We went through load testing of 3000 users over 8 hours and didn't have a single issue. Then suddenly when we went live we were hit with these extremely high active sessions. This morning we were at 1.3Million active sessions on each spaces server!!!
So now I have two more questions:
1) Is there a way to kill sessions without restarting the managed server?
2) Does anyone have any suggestions on how to troubleshoot what is holding the session??