Sorry this is late, but maybe you can get a couple adjustments in before Sunday.
Hopefully you flexed Boldin, he had a great game.I'm in a 14 team league, so Boldin is an every week starter for me
I've been using recievers in my flex slot, but Burleson broke his arm and the guy that has Broyles buried on his bench won't give him up, so I flexed a RB this week (Danny Woodhead) hopefully it pans out. With Boldin's big game I have a nice lead going into Sunday because my opponent only picked up 2 points.
Sproles should be a solid start, and with Mendenhall splitting reps with 2 other backs, you pretty much have to go with Spiller. Mendenhall seems like a desperation flex play to me.
Even with Davis in the lineup, Boldin will get touches, and he catches at a high percentage. I would flex him all year. RB's aren't producing this year and I wouldn't count on anyone outside the big dogs unless they're in a very favorable matchup.