I think what I would say, primarily, is that you couldn't hurt anything by trying to bend it back. Use an adjustable monkey wrench to get some leverage, adjust the jaws to the thinness of the ring and give it a go, slowly. It may be a lost cause, you may have to replace the ring. I suppose the ring should have bent before any BB damage. I am guessing that 30 deg. is a bit of an over statement, because it would probably throw your chain and wouldn’t fit through your derailleur (if you have one?). The force applied to the ring parallels the drive train, so what I’m thinking is a little weakness in a side-to-side won’t make that much difference.
Adam