Why would the Jets let a fairly-productive Thomas Jones go and then sign LT? Tom…

Why would the Jets let a fairly-productive Thomas Jones go and then sign LT? Tomlinson has mentioned publicly that he’s OK with being a third-down specialist…something the Jets already have with Leon Washington! Am I missing something here? Thomas Jones could have split carries with a potentially fragile Shonn Greene, while Leon Washington handled third down duties. If they get LT now, they get an aging running back who will split carries with Leon Washington on third down? Please explain.

P.S. Hello, Patriots? Instead of just watching a bunch of your guys leave in free agency, how about you make some moves to help a team with some serious holes at this point?!