I think so. They won't be playing the game any time soon.
Week 4 will work as a bye for both teams, but since the Titans/Steelers don't have the same bye week, they'll have to shuffle their fixtures around... as well as other teams' fixtures later in the season. Week 4 WILL be their bye week (they won't get their scheduled ones)
Basically, it's gonna be a logistical mess and we'll all just have to just play our hand as it's dealt.