Down shift, get it in neutral and find a grade or some thickets if need be. There are ways! Be as safe as you can be!
I lost brakes in a snow storm. Side swiped snow banks to slow down, and minimal damage. Lost brakes another time (macadam flipped up ripping out brake hose) and just coasted into town and turned around on a flat parking lot and got home. By the house, i turned into the hill where I parked. Daughter never even realized that I had lost brakes until I told her. ..