Even if Henderson just has bruised ribs - it's a painful injury that limits mobility. They could IR him for 3 weeks. They'll need a 3rd RB to dress and Otis Anderson is not the answer. They could find a RB on another teams' practice squad and sign him to the active roster. Then in 3 weeks cut him and maybe try and add him to our PS.
Depending on Chris Garret's health - might have to do the same with OLB. Funny we don't have any OLB's on the practice squad (not counting Lawler who could be out for a while) and really no real RB - the 2 areas we have injuries in. Plenty of O-line and DB's though