I’m sure many people do renovations inside the city but don’t sample for asbestos or remediate it properly.

Statutes and case law regarding LLCs are state-specific, and what is true for you in California or Florida could be completely wrong for the original poster in Georgia - he should talk to an attorney in his state.In both of the jurisdictions in which I am licensed (Texas and Oklahoma), state law says the exclusive remedy for an LLC member's judgment creditor is a charging order.

The realtor received her balance and I had the annual fee removed. 

If TENANT(S) do not use the ceiling fan and as a result mold or a mold like substance appears, the TENANT(S) shall incur the cost of remediation.

If not, I would not pay thousands for professional remediation.  

The deal originally fell through due to an inspection contingency which was remedied by the previous owner.

I think if they did not follow your rental guidlines you should be able to have some sort of remedy.

Some courts have interpreted  the inclusion of a  'pet deposit" to be the sole remedy for the landlord!

I would go down that road first.The contract itself would spell out the various liabilities and remedies in the event of default… but given the above issue can there even be a default declared?

If Seller defaults, Buyer may elect one of the following remedies: (a) cancel the REPC, and in addition to the return of the Earnest Money Deposit, or Deposits, if applicable, Buyer may elect to accept from Seller, as liquidated damages, a sum equal to the Earnest Money Deposit, or Deposits, if applicable; or (b) maintain the Earnest Money Deposit, or Deposits, if applicable, in trust and sue Seller to specifically enforce the REPC; or (c) accept a return of the Earnest Money Deposit, or Deposits, if applicable, and pursue any other remedies available at law.