I would say when you're bombing...pick your spots. Make sure you can't hurt anybody if you bail, and don't start off picking the steepest part.
Can't comment on muscle memory, but when people told me to get low, I always thought it meant like an athletically ready stance. Knees bent, low center of gravity, ready to react. Baseball players I think show the stance best, but you might not be spreading your legs so wide
More symmetrical than in the picture, but that's the right idea. I would say that the feeling is that your knees are bent ~ halfway.