Minor point here, the article says Rossi ran the Ten Commandments study. Not sure if there's a different study you mean?
However (!) there are a bunch of other Ariely articles which are extremely suspicious and which are suspected of being fake. At this point I would say everything he has ever written should be assumed to be faked.
I expect a broader investigation will reveal more fraud. Apparently Duke doesn't care enough but hopefully some renewed attention to the case will force them to take action.
It seems no one can provide receipts (which is bad! due to reproducibility), and since Ariely's name is on the paper and Rossi's is not, the onus is on him to have kept that documentation. He asked that Rossi at least corroborate the details described in the paper, and she refused to do so saying that it didn't align with her memory or her standard procedure at that time.
Maybe the whole scandal is an elaborate memory priming experiment?