I just found out it was to keep the money from his wife so she won't spend it, which is not illegal just weird. So based on all of this, I do not think I need to file a SAR. Am I correct?
There really isn't a "yes" or "no" response. You're correct in your assumption about hiding assets from his spouse. I don't believe that is in fact illegal. However, this transaction is unusual. Given the customer's response, do you feel the transaction(s) is/are suspicious? During your research of the account(s), were there any other transaction(s), which when combined with the aforementioned ones, make this seem suspicious? If so, file the SAR. If not, do not file the SAR.
Either way make sure to document your rationale for whatever course of action you take. This is my opinion, but I don't think that most regulators would have an issue with you not filing in this particular case.