Re: DC's New 52: Reviews and Discussion (Spoilers welcolme and likely)
No, Scar just covered them in some kind of black goo. They were rescued when the Rainbow Corps took on Nekron.
I haven't been reading Green Lantern: New Guardians
, but in the "New Guardians" arc post-Blackest Night
Hal pretty much did the same thing. Salaak brought it to their attention and the Guardians deferred to the Justice League to aid them. Hal never lost his ring for that.
"When I reach for the edge of the universe, I do it knowing that along some paths of cosmic discovery, there are times when, at least for now, one must be content to love the questions themselves." --Neil deGrasse Tyson