I believe this die crack to be the one posted below... (I copied the following from Wexler's page). "Stage C of 2009 1¢ FY WDDO-002 shows the die crack has grown to this size indicating the die was ready to fail". Just thought I would post a picture of the one I just found in a roll.
The coin shown is similar to WDDO-002, but I cannot tell if it is the same die or not... I would suggest using other sites in addition to Wexler's when attributing 2009 DDOs and DDRs. There are just so many dies that have similar cracks, unless it is exactly the same as the one shown, I mean exactly, I wouldn't assume there are they the same die unless there are other indicators to substantiate.