ITA with the 2 PP -- I think it's far more likely that they will think that intact penises just have things that go wrong, and that circumcision is the way to go.
Also, it might not be ballooning this time around -- what if he has some separation trauma, or a UTI, or a yeast infection, or a mild inflammation, or it's not retractable by a certain age? There are many, many invalid reasons that doctors recommend circumcision. This family is far more likely to fall prey to ignorant medical professionals because they've already done it once -- and they don't want to recognize that they made a mistake once. If they circ the second, they're more likely to feel better about circing the first.