This very well may be true... I interviewed last wed-thursday and at the end was told "you have been accepted, congrats" all that stuff... And yesterday I got "THE NO LETTER" from them... I called them today to find out if this had been a mistake, and they said it was management's decision. I had made a mention that the letter said I did something in the interview or sim and told him that the person interviewing told me both were great. He proceeded to get mad at me and tell me he didnt want to argue with me and couldnt tell me why I got the NO.
There was absolutely no reason for me to get a no as I did really well in all aspects of the interview. Aside from it being a HUGE shot to my confidence (feeling that I did something wrong), my only guess is that they have stopped for now....