Most likely I did
I just wanted to hear "oh no, that's bogus. The ring wouldn't cause any problems. Your phone is a dud, you should unroot/relock your phone and send it back blahblahblach" or "I think you may have fried your NFC chip by putting a dang magnet around it you pretty much ruined your phone way to go blahblahblah"
I suppose I'll give it another go when I get the time. I didn't realize this forum was already up, sorry!