Fiduciary Duty

What is the fiduciary responsibility of an LLC as the obligor of re-payable funds in an independent living retirement community?

I am the managing member of an LLC that was formed to develop a real estate project with the land owner. After 5 years of seeking the approval from planning, because of the project size, we finally received the go ahead to move forward. I contacted the owner and his son told me that his father was away at a health resort losing weight. After the third contact the son told me that his father was in Federal Prison for stealing $12 million from a patent scam and that they had to pay back $ 4 million and in order to do that they had to borrow $ 4 million on the land site and by doing so, they were not able to deposit the land into the LLC free and clear. He was supposed to also sign and gaurantee the loan and no lender would finance this loan under the situation. The remaining members have brought suit against them for our lost development costs, time, and lost income from the future business. Because of the loan they can not deliver the site and we are suing under the breach of contract. They are also counter suing under breach of contract as well as my fiduciary duty to act on their best interest. Because of his second case of fraud with his same co-conspirators my attorney advised me not to have contact with them and to only work with the attorneys. My question is do you think that I broke my fiduciary duty to them or that I breached the contract to move this project forward?

Are law enforcement officers on duty exempt from following traffic laws and if so under what conditions?