As someone who played offensive line in college, I am keenly aware of how much of a role familiarity with the guys next to you on the line plays in unit effectiveness both for run blocking and pass protection. That being said, there comes a time when a change needs to be made.
As of right now the Denver Broncos have the third most runs behind right guard in the NFL (27), but those runs are gaining 1.30 yards per carry which is dead last in the NFL by far. I didn’t notice this being a problem until Quinn Meinerz got hurt, so maybe the coaches are just praying for Quinn to get healthy so they can go ahead and put Glasgow back on the bench.