I don't understand why they would put the briefcase on him in the first place if that wasn't the plan all along.
Sure, you had the Mr. Kennedy er......Andersoner...the VP of the Aces and Eights who won the briefcase and then never got a chance to cash it in, but that was because it was deemed he had an injury that was too severe to know whether he would even return for the next Wrestlemania. Other then that, it's been pretty straightforward: The case stays with the man who won it in the first place.
We've seen matches where the briefcase has been on the line, of course. Most recently, the match between Dolph Ziggler and John Cena at TLC, and looking back over seven years, the winner-take-all match between Shelton Benjamin and RVD at Backlash 2006 where Shelton's IC Title was on the line. But in both cases, the briefcase remained in the hands of the man who won it, and they successfully cashed it in.
I have no doubt that we'll see Cody somehow goad Sandow into putting the briefcase on the line, after all, that's the big issue between the pair in the first place, is it not? But it's a match Sandow should win, but if done properly, it's a feud that could elevate both Sandow and Cody Rhodes.
A cool surprise would be if Sandow cashed in on a heel champion, such as Del Rio. We've seen heels on faces, faces on heels, and faces on faces. But since the inception of Money In The Bank, we've yet to see a heel cash in on a heel. Not only do I think Sandow cashes in, but I think he does so on a heel champion.