I don't have any experience, but am surprised why you seem so worried. Why is this 'really urgent'?? If you are returning to the US via a proper border point, and you have your passport and AP, and you are not ineligible to enter the US (i.e. you don't have previous periods of unlawful presence in the US), then there should be no problem... Besides, one person's experience doesn't necessarily prove anything... so just relax and don't worry about it....