With all due respect I think this is an overreaction. Of course if 5 starters go down it will be a problem, as it would be for any team in the NFL. But these young players are backups and it1 or 2 of them have to see playing time with 3 or 4 of the starters I think they will be fine for the most part. Of course there will be some level of performance drop-off but I don't think it means disaster.
These backups faced the Seattle starting DL for much of the fist half of the game and while there were some obvious problems, they did okay. Just replace Waletzko with Steele, Ball with Martin, Tyler Smith for Hoffman, and Tyron for Asim Richards, with Biadasz at C and they line will be pretty good. Tyron goes down, they can move Tyler out to LT and Farniok into LG and I think it will work out okay, although I would groom Asim Richards for the LG spot. If Biadasz goes down, Farniok will be okay at C. The biggest problem might be losing Steele. Waletzko is not ready to start even as a backup.