Ok, Crucial's memory RMA came in over a week ago. Two new modules.

The ASUS mobo came in today. Same board I sent in. No visible signs of any rework. No description of what was tested/done included with shipment nor available on their RMA status web interface. The board was in "repairing" status for over a week before it was shipped back to me.

Time to put this all back together and then burn it in again with Prime95. Fingers crossed.