If Travis had continued with the Bills, even if he had showed some desire to contribute on the field, I believe he was in jeopardy of being cut by the Bills. He showed nothing in training camp, nothing in pre-season, nothing in the regular season. I believe the reason is he has or had nothing left in the tank.
Now, because he essentially did nothing all last year, there might be some temporary resurgence in his game. But I think he's done for in the long run. He didn't have a step to lose. He's lost it and therefore any chance to be an effective back in the NFL.
Watch the Titans this season. We'll see who is right.