Also wrong. What we call turn is more properly called negative roll (though that depends on convention) and is caused when the differential between the center of gravity and the center of lift creates a pitching moment (that is, a torque about the pitch axis - pushing the nose either up or down). Because the disc is a spin-stabilized wing, gyroscopic effects dictate that moments on an input axis normal to the angular momentum vector also cause motion on a mutually perpendicular output axis.
http://www.discwing.com/research/aerodynamics.html
http://en.wikipedia.org/wiki/Gyroscope
The only variables that truly matter to disc flight that are not the product of the aerodynamics of the disc itself are release angle, angular velocity / directional velocity (more properly, a quantity called the advance ratio), and and off-axis moments applied to the disc at release.
Rolling your wrist under -> spike hyzer because the moment applied along the roll axis forces the nose up. Rolling your wrist over similarly forces the nose down. Both affect the angle of release as well.
In this context, a hyzer flip is simply a throw with a high enough directional velocity to force a strongly nose down pitching moment, and the proper angular velocity to avoid ultra-stability (spin too high - too stable), and turn-and-burn (spin too low - not stable enough).
Here's where I'm stuck - wobble causes turn-and-burn, but why? Using the above model, the effect should be nothing more than a sequence of pitches with the same magnitude but opposite direction, and not actually affect the flight, unless the transient characteristics as the disc leave the hand dominate its later motion...
Maybe it's correlation and not causation, because putter flutter doesn't seem to result in under-stability inside the circle, so maybe wobble is just something that you see when you don't apply enough spin for the amount of armspeed (in dg terms), not something that actually causes under stable characteristics.
dang them are some dandy terms.
/me wishes i had taken a few physics classes in college.:\