If you want to do this, go to the published report in Report Admin
Click on View w/Data Refresh
This should open up a new window and you can get the basics for the link from there... Something like:
http://lbiserver:/ers/ersRequestHandler.jsp?CMD=VIEW&REPORTID=&INSTANCEID=0&REFRESH=true&OuterWrapper=true&ACCESS=All&ACCESSTYPE=role&EFSSESSIONKEY=&NewReport=true
It may take some doing to get an authorized EFSSESSIONKEY, and etc, but this may get you started.