I don't think this means much in the way of Springs staying or going, but Jimoh was a great special teams player last year and will probably be there again this year. I can't see him getting much action on defense, but you never know. If I had to guess, I'd bet even AA is ahead of him on the depth chart... which is pretty damning news.
Update [2007-3-7 9:36:36 by Skin Patrol]: Per the Official Site. Jimoh is a special teamer and won't see a lot of field in normal Defensive Sets. He's good to have though, because he keeps valuable starters off the field on Special Teams, where they can suffer season ending injuries. Contract details pending, though presumably league minimum or close to it.