From MSI K8N Diamond mobo review...
My MIS board has the same issue. I am wondering how you, or anyone else, managed to remove that plate from the board?Unfortunately MSI in all of their wisdom glued the back plate down to the board. I had an extremely difficult time removing the stock AMD mounting hardware to mount this board. ASUS has done the same thing with the A8R32-MVP Deluxe and the A8N32-SLI Deluxe, however the glue was easy to break lose and the old mounting hardware came off easily. Not the case with the MSI board. I was VERY surprised that I didn't damage the board during removal of the stock AMD mounting hardware.