i've tried myself you cannot remove the copy protection from the gamesave (without it ruining the save file completely) it has been tried in the past but it just made the copy protected save file unreadable by any game, you can transfer the copy protected save file to a usb stick after extracting it via ftp but it's pointless because you can't copy it back over to any ps3 you want it still says "copying prohibited"
also ftp the files into the ps3 with a copy protected save file doesn't work most of the time, it will either not save properly or it will say save corrupt and go in a endless cycle to try and attempt to save.
so unless someone knows a valid way to get copy protected save files to copy over to any ps3 we are stuck like this till someone does that, but i won't hold my breath that we will get any progress.
PS3 Slim v3.55.4 CFW Rebug 1TB Internal, External 2TB
XBOX 1 with XBMC
Wii 3.2E + Cfg UsbLoader External 1TB
DS lite & DSiXL + Cyclo ds 8gb micro sd DStwo 16gb micro gd
PS2 V14 legit matrix infinity modchip
PSP slim 2006 5.00 M33-6 8gb memory stick pro duo
PSPgo with 16GB M2 6.60 PRO B10