COS/WIP Activity Hangs

Anyone have any thoughts on this?
Epicor 9.05.606
We run COS/WIP Activity for the whole month of December, it hangs.
We run it from Dec 1-27th, it runs in about 4 min and completes.
We run it from Dec 1-28th, it is still running, but has been running for the
past 18 hours. So we kill the process and run it again....keeps on hanging.

We went live on Jan 1 2012. When trying to balance January, we noticed we
were off by a lot of money. So we found that transactions were posted in
December as a result of a flawed DMT load. The DMT Load was performed on Dec
28th.

Cant start over, so we need to isolate which transactions they were and then
get them out of there. Thats why we are running the COS WIP Activity.

Called support, not much help. Thought I would ask on here. I tried
searching the archives and no joy.