Unfortunately, DP run with MITB conflicts with whatever story they are telling with Seth. So they just have him hold off. If that's the case, just have him lose the cash in. I still would have loved for Truth to somehow use that briefcase as a cash in by "accident" as the final straw with his runnings with Judgements Day. Could have let them off the hook with a DP cash in since it's just not his time.
Now they may be using it to cash in successfully on Drew if he wins it since he still has not signed his extension. Does his contract end at WM? Or still have some time?