Agree with @Ned Carey , it depends on what your contract says.
I had a similar situation last week with a property in NC. It was a foreclosure with similar "as is" clause and was winterized, the offer included a 10 day due diligence period for us to inspect. They required us to pay to have it de-winterize and re-winterize if we wanted to inspect. During due-dilligence we inspected and found that the company that did the winterizing initially did not do it properly and there were a significant number of broken pipes, so many that we would have to re-plumb the house to correctly fix it. Requested a reduction in price and they declined, and since the margins were so thin, we terminated the contract.
Now that they are aware (we cited it in our termination letter), they will have to disclose it to future buyers, and hopefully we'll see the property sit for a while and then price drop to some thing that makes the numbers work again.
NC is a little different than other states on due-dillegence though, buyers may walk for any reason or no reason in the due diligence period. I'm not familiar with NJ.
Pat