Of course; look at how often guys like Milton Bradley were given third, fourth, fifth, etc. chances. Stewart is still under 30, would be cheap, a former highly touted prospect, plays decent defense and still has the reasoning/excuse of his relatively recent surgery as why he might still succeed despite his struggles. I have no idea why you think this would be so career-ending when tons of people who have been much, much, much worse, both on and off the field, have bounced around.