Guys, I'm not pushing for the ring to be bought on way or the other. I see your POV. I just bought up other considerations. Btw, my mom was a nurse as well. I've seen Green Lantern's ring stay on through crushing, punching, blasting, being hit by meteors and so on. I've also seen him fall down and the ring falls off. Depends on what the writers wanted. Really, it depends on what the GM/players decide. So, player, you don't want the ring falling off? Build it that way. You don't care one way or the other? Build it that way. Regardless of what the rules say, as Ninjabear mentioned: "The main object of the game is for the players and the GM to have fun. Champions 3rd ed. Pg 130".
I always emphasize the main object of the game. (I recall a thread I left because I kept trying to emphasize that but someone else kept objecting. Go figure.)