what could this mean about my car?

[Joe]

I went to a dealership to trade in my car. First the guy told me my carfax reported a damaged bean pillar.... he went on about how my cars structual integrity was at stake and he could never legaly resell my car... ok so i looked a little deeper and had some questions. there was "Damage Reported" now im not sure if it was an accident if it would say "Accident reported"? anyways the "rear passenger side was pillar" the details dont say it was an accident. it doesnt even say that there was any maintanence done.. it says and i quote " Vehicle Inspected After An Accident "OR" other Incident Damage to Right Read Pillar" it doesnt say it was involved in anything just that somone inspected that pillar which is the section of frame in the rear corner that seperates the glass.... the dealership went on about how they cant resell this car and lied about what was damaged as far as ive found out "Bean Pillars" dont exist. how should i go about talking to these people. if it was in a collision or accident wouldnt the car fax suggest so.... it sounds to me it could have been somthing as simple as she backed into a garage door or a sign or somthing high enough just to damage that one portion of the car. all other issues came up clean. no airbag deploment, no total loss, no "stuctual damage" no odometer rollback. just under Accident/ Damage check it says "Damage reported". help plz