Not necessarily brother. Backups to our backups in Ball (Guard) and Waletzko (Tackle) seem to be improving. Plus, they are younger, hungry to prove themselves and have been with the team for several years now. TJ Bass is proving to be a good starting replacement for Zack Martin at Right Guard. Brock Hoffman is looking like the better starting Center. Move Cooper Beebe to his natural college position at Left Guard where he would likely perform much better. Same thing for Tyler Smith. Move him to his natural college position of Left Tackle. Keep Tyler Guyton as your swing Tackle as you decide whether to keep Terence Steele or not. I would keep Steele since he's shown improvement this later half of this season. The only one ready to go is Zack Martin. Cowboys still have good backup talent with Asim Richards and Earl Bostick Jr. Only issue with them is their current injuries and continued development. Oline should be fine with who we currently have. A late round pick (or undrafted free agent) might be all that might be needed at this point.
POST EDIT:
I will say this, Coach Mike Solari was correct when he said during the offseason and preseason that Brock Hoffman should have been our starting Center! Clearly, Jerry jumped in and forced the move to rookie Cooper Beebe just for the hell of it, especially for a position which Beebe had never played before. Beebe has done well, but Hoffman is better at this point. Just for this observation correctly made by Coach Solari months ago, I say he should be given another year to stick around and keep molding this Oline which we now are seeing gel into a better, stronger and younger group.