There have been problems with Jiffy Lube, but not with the radiator. This is a very common problem with the radiator. Many are failing now because it is plastic and the car is 15 years old or so. There is an all aluminum radiator that can be purchased from PWR ($600 or so), or stock type with the plastic like the one you have for around $165 or so. I would say that it is just a coincidence that the radiator failed after they serviced your car. Time for a new radiator.