emergency core update disabled site nothings redirecting right
Installation and Configuration
I've been upgrading sites for weeks now, as well as dozens in the last 3 days and so far have not seen this at all. So something is unique about your setup that is causing an issue. If you can't load the site AT ALL, then it's a web server/.htaccess issue.
Send me your root login and password, as well as Jamroom admin login and password to support [at] jamroom [dot] net and I can check it out.