Quit Claim Deed - Forged signature and not notarized

quit claim deed - my signature was forged by my husband, my forged signature is not notarized, his own signature is notarized. the deed was filed, not sure how it was recorded, since all sellers signatures have to be notarized under minnesota law. of course, it shows no purchase price, just the transfer of property, which was worth approx. $400,000.00 at the time. is there any i can do?