#2 To cash in at a big show

The best Money in the Bank cash in of all time is widely considered to be Seth Rollins cashing in at WrestleMania 31 in the main event and winning the WWE Championship. He cashed in as a heel and held the briefcase for a while before cashing in.
Having Owens run with the briefcase be similar to Rollins with him holding it for a while and then cashing in at a big event to stop a babyface from winning the title would be perfect. A huge event like Survivor Series, Royal Rumble or especially WrestleMania would make the cash in even more special. Ruining a big babyface moment would create instant heel heat and set up a big title match for him.
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And also, WWE would always have Owens as their get out of bad booking free card with him able to cash in at any time.