CSW can request an appeal, but the appeal judge can look at the request and see if there is any actual real value evidence that can put into question the verdict, to be worth actually going to an appeal case to be seen in court..

appeals dont just happen where a request results in new court room drama, appeals can be denied if there is nothing worthy(no new compelling evidence)
especially with the forgeries, he would have to provide something really substantial, just to even get an appeal to go ahead before even getting into an appeals court

in short he has to show something compelling for it to move to a ongoing appeal case.
i feel he has drained all avenues and cant provide any real evidence worthy of an appeal