If your home is foreclosed, is the home equity loan tied to the property still due?

Unless it was the home equity loan holder that actually did the foreclosure action or some other lien holder that was junior to the same you are still on the hook for the debt and your ex is incorrect in his assertion that the debt has been discharged.

You may still be on the hook for the loan, unless the loan could be classified as a purchase money loan, or the foreclosing lender on the senior deed of trust was also the holder of the deed of trust securing the home equity loan. Both you and your husband would benefit from a consultation with a real estate attorney.

It depends on more facts that you haven't provided. Email or call a real estate attorney for a full consultation.