Based on the terms of the agreement you may be able to recover a portion of the payment given to the company. I suggest you contact a local attorney to review the specific provisions in the contract to determine what the exact breaches were and what the penalties are. The agreement may also determine whether you should proceed with a civil claim if they don't comply with your demand for a refund, or whether you must submit to arbitration.
While I have heard of similar types of agreements, you should be very careful when making "investments" when your refund is tied to a royalty. Accounting can be seriously manipulated and regardless of how high the royalty rate is you want to make sure that you very clearly understand what benchmarks need to be met before you are reimbursed. I suggest contacting a local attorney to review the terms of the agreement. Again, the issue you may want to focus on is how the royalty is calculated...
As a private service they are entitled to revoke your membership whenever they want for almost any reason. You should search their help section for information on appealing a decision like this because you probably don't have any legal recourse.
All of the information you listed is a matter of public record (which is most likely how they obtained it) and there is generally nothing wrong with posting that type of information on the internet, especially if there is no quantifiable harm caused to you by it being posted.
That being said, you may still be able to discuss the issue with the company and they may be willing to provide some sort of compromise that doesn't disrupt their service but still gives you more privacy.
They will probably file a note on your credit but they may also sue you for damages and/or return of the property. If they sue for damages they could put a lien on your income to ensure payment or prevent you from getting a loan in the future. If they sue you for recovery of the property it won't be stealing but failure to return the property will put you in contempt of court, which carries similar penalties.
Bottom line, if you broke the contract and want to keep the furniture you need to...
While oral agreements are binding because you have a court order it would be in your best interest to stipulate to a modification of the order. This means that the two of you would reduce your agreement to writing and submit it to the court to modify the order. Otherwise you are still left with a court order and your word against hers if a dispute arose.
There are almost always no lawyers allowed in small claims court. Since you are seeking to recover less than $5,000 all you need to do is prepare your paperwork, have it served on your ex, and attend the hearing. You can, however, consult with a local attorney who can prepare you for the hearing and help you prepare the paperwork to make sure everything is in order.
I do not practice in your state, however in California it is illegal to operate a contest where a minimum number of entries is required for someone to win. I suspect there may be a similar requirement in OK, which is why you couldn't find a clause like that in the terms and conditions. You should consult a local attorney who may be able to provide you with the comparable rule for your state. In the mean time I wouldn't accept the $500.
Even in the absence of a non-compete agreement, your employer could still fire you if they found your business to be a conflict of interest if you are an at-will employee. They would not have a right to your unique methods or your business based on the information you have provided, but it would still probably be in your best interest to get their approval,
If the furniture is worth $5,000 or less you can file a small claims action against her for its return. The NC Legal Aid website has a guide for filing: http://www.legalaidnc.org/Public/Learn/publications/Small_Claims_Court/default.aspx
If you're interested in collecting more you should consult a local attorney.