Your husband violated his court ordered alimony when he stopped making payments without first going to the court to have payments stopped. I suspect you now know that so, the answer to part of your question is 'yes' she should have gotten that money.
If you believe that disability fraud is occurring, report it to the agency concerned immediately. http://ssa-custhelp.ssa.gov/app/answers/detail/a_id/48/~/reporting-social-security-fraud
NOT LEGAL ADVICE. FOR EDUCATION AND INFORMATION ONLY. Mr. Rafter is licensed to practice in the Commonwealth of Virginia and the US Federal Courts in Virginia. There is no implied or actual attorney-client relationship arising from this education exchange. You should speak with an attorney licensed in your state, to whom you have provided all the facts before you take steps that may impact your legal rights. Mr. Rafter is under no obligation to answer subsequent emails or phone calls related to this matter.
Your husband should meet with an attorney. He is obligated to comply with the terms of the decree, or face contempt charges. Your question about whether the ex- should have received the money is not the issue. She should be receiving the alimony, and most likely not the disability. That matter will be between her and the Government. You just don't want to get into the middle of that mess and end up being implicated.
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