if i were you, i would try to think what bothers me to come to my solution… if its your camera you could DISABLE LOCK TO HMD, if you run your camera rotation through other calcs, make A BOOL SWITCH 
if i were you, i would try to think what bothers me to come to my solution… if its your camera you could DISABLE LOCK TO HMD, if you run your camera rotation through other calcs, make A BOOL SWITCH