It depends on how deformed the bumper is ! ... it could be a bad mold and then the part could have been pulled before the part was properly cured.

So his stories changed ? ... it is a race-part is NO excuse. BTW ... how much was it and what did it weigh?

There is a write-up on this place in the newest Mopar Action. Kind of says it all.

Now heating up a part ? ... if it is really REALLY "green" it might work.