I like LJ's chances in 2009. With his contract now being non-guaranteed, he has to produce or he will be gone. Jamaal Charles and Kolby Smith aren't much competition for LJ, and would really leave KC shorthanded in their backfield if LJ were traded or released.
So I think he's very secure as KC's #1 RB as long as he stays out of trouble off the field.
Also, there are many in Fantasy circles that mistakenly believe Johnson is injury-prone and worn down. I don't believe this is the case. LJ had two huge workload seasons in 2005 and 2006, but besides that he had virtually no carries his first two years behind Priest Holmes, and very few the last two years because of contract holdout/injuries/suspensions.
And to clarify, Johnson's only injury was a hairline fracture in a toe in 2007, and that injury is completely healed. His knees and shoulders have never sustained any serious injuries his whole career.
I agree with the others above, Johnson is a solid #2 RB for 2009.
I have the doomsday device!