pjl1, your DIMEQs are still there. Either WMIH, or JPM, or THMW, instructed the SEC to de-list and suppress DIMEQ holdings as at March 2012.
No one can steal these LTWs, they are just hidden in our accounts. When the FDIC releases the funds (still nit-picking final Award), the SEC will instruct the brokerages to re-list the shares.
You can go to your 03/31/2012 brokerage statement to see your holdings before they eliminated them from your account.
I believe that all that was done to prevent an off-off pink sheets transactions in these ever increasing valuable securities.
Good luck.