Interesting situation. But there are too many unanswered questions about the post for me to formulate a response. I also can't provide legal advice on a forum. The poster would need to contact my office and I'd have to review the all the documents. Some educational tips:
1. This looks like an "out of state" purchase. BE EXTRAORDINARILY CAREFUL when doing this! Buying a property you can't physically enter is very risky and for seasoned investors. The biggest problems I see as a lawyer arise from people buying out of their state or far away as they can't inspect or over see the property. Relying on others also doesn't seem to help either. No one will look after your property better than you.
2. Yes. In Utah and most states to a varying degree, sellers can be liable for fraud, misrepresentation or failing to disclose AFTER closing. Granted, Utah is a "buyer beware" state. But that doesn't absolve sellers in every case. There are many lawsuits on this and buyers do win them, or at least get some compensation! Typically they end up in arbitration and I've sat in a lot of those representing clients and arbitrate for others. These issues can be difficult to prove, but arbitration is a very "what's reasonable" arena and legal standards of proof don't apply. And remember, neighbors will ALWAYS rat on you.
3. Having done a lot of arbitration on these kinds of disputes, it's ALWAYS my recommendation to fill out COMPLETELY the seller disclosures. Writing in "I don't know" is better than leaving blank. And be HONEST, even if you think it might scare a potential buyer (it rarely does). Do this on your flips and even when you say "sold as is".
4. Going after the inspector will probably be more difficult than the seller, but you can. Inspectors waive off a lot in their contracts. Agents can also be liable! Both are licensed so you can also go to your division of real estate to file complaints, which might spur action.
Hope that helps!
Happy investing!
Jeff