I tried my friend's SPD's, tightened them, and did a quick fishtailing skid. To skid like that you really have to throw your weight to the side and that starts with your ankles and legs. Of course this caused me to pop out of the pedals and rack myself on the stem.

So this won't happen with Frogs or ATACs? That'd be great because I REALLY liked how the clipless pedals felt but I REALLY did not like how it felt to have my heart jump up into my throat.