Why would Zeke do what Bell did? That accomplished nothing, absolutely nothing. All Bell managed to do was cost himself a years salary, which was a lot of money, and then end up on another team. You can argue that he may have go hurt if he played last year but even if he did get hurt he still would have been signed by someone.
On to Zeke, I'm a Dallas fan and I think Zeke has to play for Dallas to win but I'd also love to see them win without him and see how Zeke reacts, if he comes back or he sits. I don't think he'll sit and if he's available in your draft you'd be a fool not to take him. There have been plenty of other times where my 1st round pick didn't perform ( DJ last year) and I did OK. If he does sit, he's a 1st round bust and you'd have to get around it...but if he falls to spot 5,6,7 and he doesn't sit.. you got yourself a good value.