Hi MasterBlastr, you are correct. If one has not closed his/her account after 8/21/2012, they can easily recover their DIMEQ position as at write-off date.
If you are on-line go to "statements" look for the year "2012". If not delineated by month, enter "custom". Enter "08/01/2012 to 08/31/2012". You should be able to see you position just prior to nullification.
Alternatively, go to "history" enter specific date 8/1/12-8/31/12 and you will see the exact date of elimination.
failing the above, call your broker.