OK i got it working but i dont know how anyone is expected to figure it out on their own.Judging from the readme,you just need to add a "!" before the .prx path then add the game path and finally enable said plugin via game.txt.
Nope, i poked around on all the release threads till i found one where the dev posted this:
Module blacklisting: Any module entry starting with '!' will prevent it from loading. Example that loads freecheat for everything except a problematic game:
I put that in my pergame.txt and it worked.Then i made a text file,renamed it to EBOOT.PBP.PLUGINS,added !/pathtoplugin.prx and put it in the folders of the games i wanted blacklisted.
Idunno,lost in translation i suppose.Thats how i got it working anyway.