I haven't noticed WmWifi change anything that it doesn't revert back to normal *
as long as you exit the program through "its" exit buttons.* If I just kill it in task manager or something, anything it does temporarily change does seem to stick until I restart and properly exit it.
I'm running V 1.6.
Anyway, I tried emailing morose media this same question, so when (if) they reply I'll post what they have to say back here for everyone. For now though, just to be extra safe, I did go and apply the modified files that non-sprint-users seem to have to apply. Just to be on the safe side.
