I'll gladly come and eat crow if I'm wrong but this should be Steele and its not close. Reid trusted Steele with the game on the line and he got 7 carries to 0 for Perine. Perine has been in the league for what 5-6 years? I'm not buying they didn't use him because he's only been on the team for a few weeks. If he can't handle a few runs after being in the league that long he has no business playing in the NFL. Steele got the carries because he's the far better RB...he can move the pile and runs with intensity Perine has never shown.
This was my initial thought. Samaje has zero carries on the season. I would imagine you would give the guy you're giving the 2nd most carries the majority of the carries before you'd give the majority of carries to the guy who you've given zero carries to all year.
In zero instances was he their preferred first, second down option. CEH complicates things and if they pickup Prince I will find room for him too. Seems like Steele was brought in for exactly this situation and has more reps running the first team offense.