RFTs can be repaired and I'd be more than happy to repair and run with a repaired RFT. Of course touch wood I don't have to!
Do remember that any damage on or close to the sidewall isn't repairable. Plus if you are had low pressure and weren't sure for how long, don't repair either. In your case, I would definitely repair and I trust you won't notice a thing apart from a few extra $$s in your back pocket :smile:
Current: 135i Auto, Le Mans Blue - w/ Bridgestone RE-11 rears, GP Thunder 7500k angels, & "golf tee" mod plus a few M3 suspension bits and pieces...