Rams have been without its best #6th ( Andrew Donnal) OL since TC began. AD is a 3rd season player. Then over a week ago swing OT Pace Murphy a 2nd season OL'er suffered a should/elbow injury that he has been dealing with. That's 2 OL'ers affected here. McVay has said neither injury would be long term issues. Both of these OL'ers once fully healthy can help out with any weak link (Jamon Brown) in this starting OL. Both of the above mentioned players have played OG in their past.
I did not see Rob Havenstein having as many issues @ Jamon Brown did in the first quarter. So I see no problem here with Havenstein. When Cody Wichman (who had replaced Brown the last 2 seasons) was inserted into the lineup he did very well IMO. Looks to me that between Donnal/Wichmann & Murphy we should be able to resolve this one post issue.
One last thing thing here if McVay is counting on Tyler Higbee to back up the right side blocking like we saw early when Brown/Havenstein had their issues then you may want to look @ his mass failures in pass blocking behind them. Tyler Higbee is in total Fail Mode most of the time in pass blocking.