S Jax/DeSean for Andre/Rodgers would work. I can't imagine the guy would part w F Jax in that deal, if he will then great so try that first for sure but even though he's out he's still borderline top 10 RB when healthy.
I don't feel like you are nearly as stacked at RB as you seem to think you are. Spiller and Brown do seem like they are awesome, but what happens when the guy they replaced comes back? They lose 10 touches a game? They go back to 3-5 touches a game? The rest of your backs are also guys you don't want as starters. Having said that, if someone is willing to give you Andre Johnson for one of them, absolutely pounce on it, and maybe don't try to complicate it with other pieces. I would guess though that you will have to include a WR, and that would be reasonably fair, but don't expect to get Jackson as well.