Yes, this makes perfect sense.
A game televised in USA on Sunday September 6th would have given the Rams and 49ers essentially an "extra" bye week and been unfair to other teams.
A game televised in USA on Sunday September 13th would have been unfair to both Rams and 49ers by depriving them of adequate rest afterward.
So a mid-week game is the way to go, and what I thought would happen. (My main point was that a "mini-bye" was the best solution.... I thought it might happen 2 days later, but I'll say I was close enough)