1.Set (or create) the SFCDisable to REG_DWORD 'ffffff9d'. (It should be currently set to '0')
Windows will not clean up the files, so if you want to trash them, you can, but leave the folder.
Check your event log and see that Windows has truly disabled it.
Other reports on the 'net indicate that a value of '1' will disable WFP, but this seems to reset after another reboot.