The caveat with recommending is in line for the majority of running back work.
If Lynch does play, then Rawls probably has more of that sleeper appeal anyway. Seattle is a 10-point home favorite against the Lions, and their projected total (26.5) is among the highest of the week. Seattle in a grind-it-out mode at home is generally a recipe for Beast Mode success, but given that Rawls racked up 16 carries for 104 yards in a similar situation against the Bears in Week 3, perhaps he's the man they use to ice the game against Detroit rather than trying to feed Lynch. For what it's worth, Fred Jackson saw just two carries and two catches last week, so it should be the Rawls show if Lynch is limited.
Rawls is still mostly dependent on a positive game script and the status of Marshawn Lynch, but he can pay off if the stars align.