It will be interesting to see if Jim Harbaugh picks him up at the 49ers. Harbaugh knows JMart and also knows that he can play and had success with him at Stanford. He also had no problems with him in the locker room. In fact he was not fazed by a lots of intelligent players on his college team. I would not be surprised if San Francisco snapped up Martin for depth. After the Miami episode, it is highly unlikely that any harassment would be repeated.
Most on here see Martin as untouchable for any team. However, if he is taking his antidepressants, gets physically much stronger and really wants to play in the NFL, I'd expect that some team will give him a chance on a roster, initially for depth as a backup and see how he goes. His biggest negative would be the media attention that would probably go with him. Manti Te'o has succeeded in overcoming the media circus, but Tim Tebow has not.
If he doesn't really want to put the effort into improving his physical strength and doesn't display a passion to play the game, then his career is finished.